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This is a modified version of the Internet RFC suitable for machine-translating. Original version is available here: RFC923

Obsoleted by: 943 HISTORIC
Network Working Group                                        J. Reynolds
Request for Comments:  923                                     J. Postel
                                                                     ISI
Obsoletes RFCs:  900, 870, 820,                             October 1984
790, 776, 770, 762, 758, 755,
750, 739, 604, 503, 433, 349
Obsoletes IENs:  127, 117, 93


                            
ASSIGNED NUMBERS


Status of this Memo

This memo is an official status report on the numbers used in protocols in the ARPA-Internet community. Distribution of this memo is unlimited.

Introduction

This Network Working Group Request for Comments documents the currently assigned values from several series of numbers used in network protocol implementations. This RFC will be updated periodically, and in any case current information can be obtained from Joyce Reynolds. The assignment of numbers is also handled by Joyce. If you are developing a protocol or application that will require the use of a link, socket, port, protocol, network number, etc., please contact Joyce to receive a number assignment.

Joyce Reynolds USC - Information Sciences Institute 4676 Admiralty Way Marina del Rey, California 90292-6695

Phone: (213) 822-1511

ARPA mail: JKREYNOLDS@USC-ISIF.ARPA

Most of the protocols mentioned here are documented in the RFC series of notes. The more prominent and more generally used are documented in the "Internet Protocol Transition Workbook" [33] or in the old "ARPANET Protocol Handbook" [34] prepared by the NIC. Some of the items listed are undocumented. Further information on protocols can be found in the memo "Official ARPA-Internet Protocols" [89].

In all cases the name and mailbox of the responsible individual is indicated. In the lists that follow, a bracketed entry, e.g., [nn,iii], at the right hand margin of the page indicates a reference for the listed protocol, where the number ("nn") cites the document and the letters ("iii") cites the person. Whenever possible, letters are a NIC Ident as used in the WHOIS service.
Reynolds & Postel                                               [Page 1]


Assigned Numbers                                                 RFC 923
Network Numbers
ASSIGNED NETWORK NUMBERS

The network numbers listed here are used as internet addresses by the Internet Protocol (IP) [33,77]. The IP uses a 32-bit address field and divides that address into a network part and a "rest" or local address part. The division takes 3 forms or classes.

The first type of address, or class A, has a 7-bit network number and a 24-bit local address. The highest-order bit is set to 0. This allows 128 class A networks.

1 2 3
       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |0|   NETWORK   |                Local Address                  |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

Class A Address

The second type of address, class B, has a 14-bit network number and a 16-bit local address. The two highest-order bits are set to 1-0. This allows 16,384 class B networks.

1 2 3
       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |1 0|           NETWORK         |          Local Address        |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

Class B Address

The third type of address, class C, has a 21-bit network number and a 8-bit local address. The three highest-order bits are set to 1-1-0. This allows 2,097,152 class C networks.

1 2 3
       0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
      |1 1 0|                    NETWORK              | Local Address |
      +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

Class C Address

Note: No addresses are allowed with the three highest-order bits set to 1-1-1. These addresses (sometimes called "class D") are reserved. One commonly used notation for internet host addresses divides the 32-bit address into four 8-bit fields and specifies the value of each field as a decimal number with the fields separated by periods. This is called the "dotted decimal" notation. For example, the internet address of USC-ISIF.ARPA in dotted decimal is 010.002.000.052, or 10.2.0.52.
Reynolds & Postel                                               [Page 2]


Assigned Numbers                                                 RFC 923
Network Numbers

The dotted decimal notation will be used in the listing of assigned network numbers. The class A networks will have nnn.rrr.rrr.rrr, the class B networks will have nnn.nnn.rrr.rrr, and the class C networks will have nnn.nnn.nnn.rrr, where nnn represents part or all of a network number and rrr represents part or all of a local address.

There are four catagories of users of Internet Addresses: Research, Defense, Government (Non-Defense), and Commercial. To reflect the allocation of network identifiers among the categories, a one-character code is placed to the left of the network number: R for Research, D for Defense, G for Government, and C for Commercial (see Appendix A for further details on this division of the network identification).

Network numbers are assigned for networks that are connected to the ARPA-Internet and DDN-Internet, and for independent networks that use the IP family protocols (these are usually commercial). These independent networks are marked with an asterisk preceding the number.

The administrators of independent networks must apply separately for permission to interconnect their network with either the ARPA-Internet of the DDN-Internet. Independent networks need not be listed in the working tables of either the ARPA-Internet or DDN-Internet hosts or gateways.

For various reasons, the assigned numbers of networks are sometimes changed. To ease the transition the old number will be listed for a transition period as well. These "old number" entries will be marked with a "T" following the number and preceding the name, and the network name will be suffixed "-TEMP".

Special Addresses:

In certain contexts, it is useful to have fixed addresses with functional significance rather than as identifiers of specific hosts. When such usage is called for, the address zero is to be interpreted as meaning "this", as in "this network". The address of all ones are to be interpreted as meaning "all", as in "all hosts". For example, the address 128.9.255.255 could be interpreted as meaning all hosts on the network 128.9. Or, the address 0.0.0.37 could be interpreted as meaning host 37 on this network.
Reynolds & Postel                                               [Page 3]


Assigned Numbers                                                 RFC 923
Network Numbers

Assigned Network Numbers

Class A Networks
      * Internet Address  Name          Network               References
      - ----------------  ----          -------               ----------
        000.rrr.rrr.rrr                 Reserved                   [JBP]
R 004.rrr.rrr.rrr SATNET Atlantic Satellite Network[DM11] D 006.rrr.rrr.rrr T YPG-NET-TEMP Yuma Proving Grounds [7,BXA] D 007.rrr.rrr.rrr T EDN-TEMP DCEC EDN [EC5] R 008.rrr.rrr.rrr T BBN-NET-TEMP BBN Network [JSG5] R 010.rrr.rrr.rrr ARPANET ARPANET [7,34,REK2] D 011.rrr.rrr.rrr DODIIS DoD INTEL INFO SYS [AY7] C 012.rrr.rrr.rrr ATT ATT, Bell Labs [MH13] C 014.rrr.rrr.rrr PDN Public Data Network [REK4] R 018.rrr.rrr.rrr T MIT-TEMP MIT Network [15,88,DDC2] D 022.rrr.rrr.rrr DISNET DISNET [FLM2] D 023.rrr.rrr.rrr DDN-TC-NET DDN-TestCell-Network [DH17] D 024.rrr.rrr.rrr MINET MINET [7,DHH] D 026.rrr.rrr.rrr MILNET MILNET [FLM2] R 027.rrr.rrr.rrr T NOSC-LCCN-TEMPNOSC / LCCN [RH6] R 028.rrr.rrr.rrr WIDEBAND Wide Band Satellite Net [CJW2] R 032.rrr.rrr.rrr UCL-TAC UCL TAC [PK] R 036.rrr.rrr.rrr T SU-NET-TEMP Stanford University Network[JCM] R 039.rrr.rrr.rrr T SRINET-TEMP SRI Local Network [GEOF] R 041.rrr.rrr.rrr BBN-TEST-A BBN-GATE-TEST-A [RH6] R 044.rrr.rrr.rrr AMPRNET Amateur Radio Experiment Net[HM] 001.rrr.rrr.rrr-003.rrr.rrr.rrr Unassigned [JBP] 005.rrr.rrr.rrr Unassigned [JBP] 009.rrr.rrr.rrr Unassigned [JBP] 013.rrr.rrr.rrr Unassigned [JBP] 015.rrr.rrr.rrr-017.rrr.rrr.rrr Unassigned [JBP] 019.rrr.rrr.rrr-021.rrr.rrr.rrr Unassigned [JBP] 025.rrr.rrr.rrr Unassigned [JBP] 029.rrr.rrr.rrr-031.rrr.rrr.rrr Unassigned [JBP] 033.rrr.rrr.rrr-035.rrr.rrr.rrr Unassigned [JBP] 037.rrr.rrr.rrr-038.rrr.rrr.rrr Unassigned [JBP] 040.rrr.rrr.rrr Unassigned [JBP] 042.rrr.rrr.rrr-043.rrr.rrr.rrr Unassigned [JBP] 045.rrr.rrr.rrr-126.rrr.rrr.rrr Unassigned [JBP] 127.rrr.rrr.rrr Reserved [JBP]
Reynolds & Postel                                               [Page 4]


Assigned Numbers                                                 RFC 923
Network Numbers
Class B Networks
      * Internet Address  Name          Network               References
      - ----------------  ----          -------               ----------
        128.000.rrr.rrr                 Reserved                   [JBP]
R 128.001.rrr.rrr BBN-TEST-B BBN-GATE-TEST-B [RH6] R 128.002.rrr.rrr CMU-NET CMU-Ethernet [HDW2] R 128.003.rrr.rrr LBL-CSAM LBL-CSAM-RESEARCH [JS38] R 128.004.rrr.rrr DCNET LINKABIT DCNET [59,DLM1] R 128.005.rrr.rrr FORDNET FORD DCNET [59,DLM1] R 128.006.rrr.rrr RUTGERS RUTGERS [CLH3] R 128.007.rrr.rrr DFVLR DFVLR DCNET Network [HDC1] R 128.008.rrr.rrr UMDNET Univ of Maryland DCNET [59,DLM1] R 128.009.rrr.rrr ISI-NET USC-ISI Local Network [CMR] R 128.010.rrr.rrr PURDUE-CS Purdue Computer Science [CAK] R 128.011.rrr.rrr BBN-CRONUS BBN DOS Project [55,WIM] R 128.012.rrr.rrr SU-NET Stanford University Net [JCM] D 128.013.rrr.rrr MATNET Mobile Access Terminal Net[DM11] R 128.014.rrr.rrr BBN-SAT-TEST BBN SATNET Test Net [DM11] R 128.015.rrr.rrr S1NET LLL-S1-NET [EAK1] R 128.016.rrr.rrr UCLNET University College London [PK] D 128.017.rrr.rrr MATNET-ALT Mobile Access Terminal Alt[DM11] R 128.018.rrr.rrr SRINET SRI Local Network [GEOF] D 128.019.rrr.rrr EDN DCEC EDN [EC5] D 128.020.rrr.rrr BRLNET BRLNET [7,MJM2] R 128.021.rrr.rrr SF-PR-1 SF-1 Packet Radio Network [JEM] R 128.022.rrr.rrr SF-PR-2 SF-2 Packet Radio Network [JEM] R 128.023.rrr.rrr BBN-PR BBN Packet Radio Network [JAW3] R 128.024.rrr.rrr ROCKWELL-PR Rockwell Packet Radio Net [EHP] D 128.025.rrr.rrr BRAGG-PR Ft. Bragg Packet Radio Net [JEM] D 128.026.rrr.rrr SAC-PR SAC Packet Radio Network [BG5] D 128.027.rrr.rrr DEMO-PR-1 Demo-1 Packet Radio Network[LCS]
      D 128.028.rrr.rrr   C3-PR         Testbed Development PR NET [BG5]
      R 128.029.rrr.rrr   MITRE         MITRE Cablenet          [94,APS]
      R 128.030.rrr.rrr   MIT-NET       MIT Local Network         [DDC2]
R 128.031.rrr.rrr MIT-RES MIT Research Network [DDC2] R 128.032.rrr.rrr UCB-ETHER UC Berkeley Ethernet [DAM1] R 128.033.rrr.rrr BBN-NET BBN Network [JSG5] R 128.034.rrr.rrr NOSC-LCCN NOSC / LCCN [RH6] R 128.035.rrr.rrr CISLTESTNET1 Honeywell [46,47,RK1] R 128.036.rrr.rrr YALE-NET YALE NET [108,JO5] D 128.037.rrr.rrr YPG-NET Yuma Proving Grounds [7,BXA] D 128.038.rrr.rrr NSWC-NET NSWC Local Host Net [RLH2] R 128.039.rrr.rrr NTANET NDRE-TIU [PS3] R 128.040.rrr.rrr UCL-NET-A UCL [RC7] R 128.041.rrr.rrr UCL-NET-B UCL [RC7] R 128.042.rrr.rrr RICE-NET Rice University [59,108,PGM] R 128.043.rrr.rrr CRANET Canada REF ARPANET [7,JR17] D 128.044.rrr.rrr WSMR-NET White Sands Network [TBS] C 128.045.rrr.rrr DEC-WRL-NET DEC WRL Network [108,RKJ2]

Reynolds & Postel                                               [Page 5]


Assigned Numbers                                                 RFC 923
Network Numbers


128.046.rrr.rrr Unassigned Unassigned [JBP]
D 128.047.rrr.rrr TACTNET Tactical Packet Net [6,KTP] C*128.048.rrr.rrr UCDLA-NET UCDLA MELVYL Network [7,CXL] R 128.049.rrr.rrr NOSC-ETHER NOSC Ethernet [108,RLB3] G 128.050.rrr.rrr COINS Network COINS On-Line Intel Net [RLS6] G 128.051.rrr.rrr COINSTNET COINS TEST NETWORK [RLS6] R 128.052.rrr.rrr MIT-AI-NET MIT AI NET [108,MDC]
      R 128.053.rrr.rrr   SAC-PR-2      SAC PRNET Number 2         [BG5]
      R 128.054.rrr.rrr   UCSD          UC San Diego Network  [108,GH29]
        128.055.rrr.rrr-128.063.rrr.rrr Unassigned                 [JBP]
R 128.064.rrr.rrr-128.079.rrr.rrr Net Dynamics Exp [ZSU]
128.080.rrr.rrr-191.254.rrr.rrr Unassigned [JBP] 191.255.rrr.rrr Reserved [JBP]

Class C Networks
      * Internet Address  Name          Network               References
      - ----------------  ----          -------               ----------
        192.000.000.rrr                 Reserved                   [JBP]
R 192.000.001.rrr BBN-TEST-C BBN-GATE-TEST-C [RH6]
192.000.002.rrr-192.000.255.rrr Unassigned [JBP]
R 192.001.000.rrr-192.003.255.rrr BBN local networks [SGC] R*192.004.000.rrr-192.004.255.rrr Bellcore-Net [108,PXK]
      R 192.005.001.rrr   CISLHYPERNET  Honeywell                  [RK1]
      R 192.005.002.rrr   WISC          Univ of Wisconsin Madison [RS23]
      C 192.005.003.rrr   HP-DESIGN-AIDS HP Design Aids            [NXK]
C 192.005.004.rrr HP-TCG-UNIX Hewlett Packard TCG Unix [NXK] R 192.005.005.rrr DEC-MRNET DEC Marlboro Ethernet [101,KWP] R 192.005.006.rrr DEC-MRRAD DEC Marlboro Developmt [101,KWP] R 192.005.007.rrr CIT-CS-NET Caltech-CS-Net [107,DSW] R 192.005.008.rrr WASHINGTON University of Washington [JAR4] R 192.005.009.rrr AERONET Aerospace Labnet [2,LCN] R 192.005.010.rrr ECLNET USC-ECL-CAMPUS-NET [MAB4] R 192.005.011.rrr CSS-RING SEISMIC-RESEARCH-NET [RR2] R 192.005.012.rrr UTAH-NET UTAH-COMPUTER-SCIENCE-NET [RF1] R 192.005.013.rrr GSWDNET Compion Network [108,FAS] R 192.005.014.rrr RAND-NET RAND Network [108,JDG] R 192.005.015.rrr NYU-NET NYU Network [EF5]
      R 192.005.016.rrr   LANL-LAND     Los Alamos Dev LAN    [108,JC11]
      R 192.005.017.rrr   NRL-NET       Naval Research Lab          [AP]
      R 192.005.018.rrr   IPTO-NET      ARPA-IPTO Office Net      [REK2]
R 192.005.019.rrr UCIICS UCI-ICS Res Net [MTR] R 192.005.020.rrr CISLTTYNET Honeywell [RK1] D 192.005.021.rrr BRLNET1 BRLNET1 [7,MJM2] D 192.005.022.rrr BRLNET2 BRLNET2 [7,MJM2] D 192.005.023.rrr BRLNET3 BRLNET3 [7,MJM2] D 192.005.024.rrr BRLNET4 BRLNET4 [7,MJM2] D 192.005.025.rrr BRLNET5 BRLNET5 [7,MJM2] D 192.005.026.rrr NSRDCOA-NET NSRDC Office Auto Net [TC4] D 192.005.027.rrr DTNSRDC-NET DTNSRDC-NET [TC4] R 192.005.028.rrr RSRE-NULL RSRE-NULL [NM] R 192.005.029.rrr RSRE-ACC RSRE-ACC [NM] R 192.005.030.rrr RSRE-PR RSRE-PR [NM] R*192.005.031.rrr SIEMENS-NET Siemens Research Network [PXN] R 192.005.032.rrr CISLTESTNET2 Honeywell [46,47,RK1] R 192.005.033.rrr CISLTESTNET3 Honeywell [27,28,RK1] R 192.005.034.rrr CISLTESTNET4 Honeywell [27,28,RK1] R 192.005.035.rrr RIACS USRA [108,RLB1] R 192.005.036.rrr CORNELL-CS CORNELL CS Research [108,DK2] R 192.005.037.rrr UR-CS-NET U of R CS 3Mb Net [58,LB1] R 192.005.038.rrr SRI-C3ETHER SRI-AITAD C3ETHERNET [108,BG5] R 192.005.039.rrr UDEL-EECIS Udel EECIS LAN [102,CC2] R 192.005.040.rrr PUCC-NET-A PURDUE Comp Cntr Net [JRS8] D 192.005.041.rrr WISLAN WIS Research LAN [94,JRM1] D 192.005.042.rrr AFDSC-HYPER AFDSC Hypernet [MCSJ]

Reynolds & Postel                                               [Page 6]


Assigned Numbers                                                 RFC 923
Network Numbers


      R 192.005.043.rrr   CUCSNET       Columbia CS Net        [108,LH2]
      R 192.005.044.rrr   Farber-PC-Net Farber PC Network          [DJF]
      R 192.005.045.rrr   AIDS-NET      AI&DS Network           [108,HA]
R 192.005.046.rrr NTA-RING NDRE-RING [PS3] R 192.005.047.rrr NSRDC NSRDC [PXM]
      R 192.005.048.rrr   PURDUE-CS-IL  Purdue CS IL Ethernet  [108,CAK]
      R 192.005.049.rrr   UCSF          Univ of Calif, San Fran[102,TF6]
      R 192.005.050.rrr   CTH-CS-NET    Chalmers CSN Net       [102,UXB]
R 192.005.051.rrr Theorynet Cornell Theory Center [108,AB13] R 192.005.052.rrr NLM-ETHER NLM-LHNCBC-ETHERNET [77,JA1] R 192.005.053.rrr UR-CS-ETHER U of R CS 10Mb Net [58,LB1] R 192.005.054.rrr AERO-A6 Aerospace [2,LCN] R*192.005.055.rrr UCLA-CECS UCLA-CECS Network [108,RBW] C 192.005.056.rrr TARTAN-NET Tartan Labs [SXB] R 192.005.057.rrr UDEL-CC UDEL Comp Center [102,RR18] R 192.005.058.rrr CSNET-PDN CSNET X.25 Network [52,RDR4] R*192.005.059.rrr Inria SM90 Inria GIP SM-90 [MXS] R*192.005.060.rrr SM90 X1 Inria SM-90 exp. 1 [MXS] R*192.005.061.rrr SM90 X2 Inria SM-90 exp. 2 [MXS] R*192.005.062.rrr LITP SM90 LITP SM-90 [MXS] R 192.005.064.rrr AMES-NAS-NET NASA ARC NAS LAN [101,MF31] R 192.005.065.rrr NPRDC-Ether NPRDC TRCF Ethernet [LRB] R 192.005.066.rrr HARV-NET Harvard Comp Sci Net [SXB1] R 192.005.067.rrr CECOM-ETHER CECOM ADDCOMPE ETHER [102,GIH] R 192.005.068.rrr AERO-130 AEROSPACE-130 [LCN] R 192.005.069.rrr UIUC-NET Univ of IL at Urbana [108,AXC] G 192.005.070.rrr CELAN COINS Exper. LAN [MXM] R 192.005.071.rrr SAC-ETHER SAC C3 Ethernet [108,BG5] R*192.005.072.rrr-192.005.087.rrr U Chicago [TXN] R 192.005.088.rrr YALE-EE-NET YALE-EE-NET [108,AG22] R 192.005.089.rrr UTEXAS-NET U. Texas Austin Net [108,JSQ1]

Reynolds & Postel                                               [Page 7]


Assigned Numbers                                                 RFC 923
Network Numbers


      R 192.005.090.rrr   HARV-ETHER    Harvard CS Ethernet       [SXB1]
      R 192.005.091.rrr   PURDUE-ECN1   Purdue ECN          [30,49,GG11]
      R 192.005.092.rrr   BRAGG-ETHER   SRI Bragg Ether        [103,GIH]
R 192.005.093.rrr SRI-DEMO SRI Ether Demo [103,GIH] R*192.005.094.rrr SDCRDCF-10MB SDC R&D primary net [108,DJV1] R*192.005.095.rrr SDCRDCF-3MB SDC R&D old net [58,DJV1] R*192.005.096.rrr UBC-CS-NET UBC Comp Sci Net [108,PXB] R*192.005.097.rrr UCLA-CS-LNI UCLA CS LNI Network [RBW] R*192.005.098.rrr UCLA-PIC UCLA PIC Network [108,RBW]
      R 192.005.099.rrr   SPACENET      S-1 Workstation Network[108,TXW]
      R 192.005.100.rrr   PURDUE-ECN2   Purdue ECN          [30,49,GG11]
      R 192.005.101.rrr   PUCC-GW-NET   Purdue Gateway Network    [JRS8]
R 192.005.102.rrr PUCC-RHF-NET PUCC RHF Based Net [JRS8] C*192.005.103.rrr TYM-NTD-NET Tymnet NTD Ethernet [SMF] R 192.005.104.rrr TMC-INET Thinking Machines [108,BJN1] R 192.005.105.rrr CCA-POND CCA Ethernet1 (POND) [108,AL6] C*192.005.106.rrr BITSTREAM Bitstream Type Foundry [108,PXA] R*192.005.107.rrr PASC-ETHER IBM PASC Ethernet [108,GXL] R*192.005.108.rrr PASC-BB IBM PASC Broadband [50,GXL]
192.005.109.rrr-192.005.255.rrr Unassigned [JBP]
C*192.006.000.rrr-192.006.255.rrr Hewlett Packard [AXG] C*192.007.000.rrr-192.007.255.rrr Computer Consoles, Inc. [RA11] C*192.008.000.rrr-192.008.255.rrr Spartacus Computers, Inc. [SXM] C*192.009.000.rrr-192.009.255.rrr SUN Microsystem, Inc. [WNJ]
      C*192.010.000.rrr-192.010.040.rrr Symbolics, Inc.            [CH2]
      R 192.010.041.rrr   SCRC-ETHERNET SCRC ETHERNET          [108,CH2]
      C*192.010.042.rrr-192.010.255.rrr Symbolics, Inc.            [CH2]
C*192.011.000.rrr-192.011.255.rrr ATT, Bell Labs [MH12] C*192.012.000.rrr CADMUS-ETHERNET CADMUS-NET [MS9] C*192.012.001.rrr CADMUS-EXP-1 CADMUS-NET-EXP-1 [MS9] C*192.012.002.rrr CADMUS-EXP-2 CADMUS-NET-EXP-2 [MS9] C*192.012.003.rrr FLAIR Fairchild AI Lab Net [108,AMS1] C*192.012.004.rrr SCG-NET Hughes SCG Net [108,MXP] R 192.012.005.rrr AIC-LISPMS SRI-AIC-LispMachNet [108,PM4] R 192.012.006.rrr NPS-C2 NPS-C2 [108,AW9] R 192.012.007.rrr NYU-CS-ETHER NYU CompSci Ethernet [108,LOU] D 192.012.008.rrr PICANET1 Picatinny Arsenal LAN1[108,RFD1] R 192.012.009.rrr CADRE-NET Decision Systems Lab [SM6] R 192.012.010.rrr CORNELL-ENG Cornell-Engineering [108,BN9] R 192.012.011.rrr MIT-36 MIT Building 36 [108,RH60] R 192.012.012.rrr WISC-ETHER Wisconsin Ether Net [108,CBP] R 192.012.013.rrr JHU-NET1 JHU-NET1 [108,MO14] R 192.012.014.rrr JHU-NET2 JHU-NET2 [108,MO14]
      R 192.012.015.rrr   BROOKNET      BNL Brooknet III        [108,GC]
      R 192.012.016.rrr   PRMNET        SRI-SURAN-EN          [108,BP17]
      G 192.012.017.rrr   LLL-TIS-NET   LLL-TIS-NET       [101,105,GP10]


Reynolds & Postel                                               [Page 8]


Assigned Numbers                                                 RFC 923
Network Numbers


R 192.012.018.rrr CIT-CS-10NET Caltech 10Meg EtherNet[107,AD22] R 192.012.019.rrr CIT-NET Caltech Campus Net [107,AD22] R 192.012.020.rrr CIT-SUN-NET Caltech Sun Net [107,AD22] R 192.012.021.rrr CIT-PHYSCOMP Caltech Phys Comp Net [107,AD22] R 192.012.022.rrr UTCSRES UTCS Net Research [108,JSQ1] R 192.012.023.rrr UTCSTTY UTCS TTY Kludgenet [108,JSQ1] R 192.012.024.rrr MICANET MITRE (Experimental) [JN2] R 192.012.025.rrr CSS-GRAMINAE CSS Workstation Net [53,RR2] R 192.012.026.rrr BBN-NETR Net-R Testbed at BBN [91,CP10] R 192.012.027.rrr UR-LASER UR Laser Energetics [108,WXL]
192.012.028.rrr-192.012.255.rrr Unassigned [JBP]
D 192.013.000.rrr-192.014.255.rrr DODIIS Subnetworks [AY5]
192.015.000.rrr-223.255.254.rrr Unassigned [JBP] 223.255.255.rrr Reserved [JBP]

Other Reserved Internet Addresses
      * Internet Address  Name          Network               References
      - ----------------  ----          -------               ----------
        224.000.000.000-255.255.255.255 Reserved                   [JBP]
Reynolds & Postel                                               [Page 9]


Assigned Numbers                                                 RFC 923
Network Numbers
Network Totals

Assigned for the ARPA-Internet and the DDN-Internet

Class A B C Total

Research 6 53 854 913

Defense 5 12 523 540

Government 0 2 2 4

Commercial 2 1 3 6

Total 13 68 1382 1463

Allocated for Internet and Independent Uses

Class A B C Total

Research 6 53 1139 1198

Defense 5 12 523 540

Government 0 2 2 4

Commercial 2 2 1545 1549

Total 13 69 3209 3291

Maximum Allowed

Class A B C Total

Research 8 1024 65536 66568

Defense 24 3072 458752 461848

Government 24 3072 458752 461848

Commercial 74 9214 1114137 1123394

Total 126 16382 2097150 2113658
Reynolds & Postel                                              [Page 10]


Assigned Numbers                                                 RFC 923
Version Numbers
ASSIGNED VERSION NUMBERS

In the Internet Protocol (IP) [33,77] there is a field to identify the version of the internetwork general protocol. This field is 4 bits in size.

Assigned Internet Version Numbers
      Decimal   Keyword    Version                            References
      -------   -------    -------                            ----------
          0                Reserved                                [JBP]
1-3 Unassigned [JBP]
4 IP Internet Protocol [31,71,JBP] 5 ST ST Datagram Mode [34,JWF]
6-14 Unassigned [JBP]
15 Reserved [JBP]
Reynolds & Postel                                              [Page 11]


Assigned Numbers                                                 RFC 923
Protocol Numbers
ASSIGNED PROTOCOL NUMBERS

In the Internet Protocol (IP) [33,77] there is a field, called Protocol, to identify the the next level protocol. This is an 8 bit field.

Assigned Internet Protocol Numbers
      Decimal    Keyword     Protocol                         References
      -------    -------     --------                         ----------
           0                 Reserved                              [JBP]
1 ICMP Internet Control Message [69,JBP] 2 Unassigned [JBP] 3 GGP Gateway-to-Gateway [45,MB]
           4                 Unassigned                            [JBP]
           5     ST          Stream                             [37,JWF]
           6     TCP         Transmission Control            [33,78,JBP]
7 UCL UCL [PK]
           8     EGP         Exterior Gateway Protocol         [93,DLM1]
           9     IGP         any private interior gateway          [JBP]
          10     BBN-RCC-MON BBN RCC Monitoring                    [SGC]
11 NVP-II Network Voice Protocol [16,SC3] 12 PUP PUP [11,HGM] 13 ARGUS ARGUS [RWS4] 14 EMCON EMCON [BN7] 15 XNET Cross Net Debugger [43,JFH2] 16 CHAOS Chaos [NC3] 17 UDP User Datagram [33,76,JBP] 18 MUX Multiplexing [17,JBP] 19 DCN-MEAS DCN Measurement Subsystems [DLM1] 20 HMP Host Monitoring [4,RH6] 21 PRM Packet Radio Measurement [ZSU] 22 XNS-IDP XEROX NS IDP [109,LLG] 23 TRUNK-1 Trunk-1 [BML] 24 TRUNK-2 Trunk-2 [BML] 25 LEAF-1 Leaf-1 [BML] 26 LEAF-2 Leaf-2 [BML] 27 RDP Reliable Data Protocol [106,RH6]
28-60 Unassigned [JBP]
61 any host internal protocol [JBP] 62 CFTP CFTP [38,HCF2] 63 any local network [JBP] 64 SAT-EXPAK SATNET and Backroom EXPAK [DM11] 65 MIT-SUBNET MIT Subnet Support [NC3] 66 RVD MIT Remote Virtual Disk Protocol [MBG] 67 IPPC Internet Pluribus Packet Core [DM11] 68 any distributed file system [JBP] 69 SAT-MON SATNET Monitoring [DM11] 70 Unassigned [JBP] 71 IPCV Internet Packet Core Utility [DM11]

Reynolds & Postel                                              [Page 12]


Assigned Numbers                                                 RFC 923
Protocol Numbers


72-75 Unassigned [JBP]
76 BR-SAT-MON Backroom SATNET Monitoring [DM11] 77 Unassigned [JBP] 78 WB-MON WIDEBAND Monitoring [DM11] 79 WB-EXPAK WIDEBAND EXPAK [DM11]
80-254 Unassigned [JBP]
255 Reserved [JBP]
Reynolds & Postel                                              [Page 13]


Assigned Numbers                                                 RFC 923
Port Numbers
ASSIGNED PORT NUMBERS

Ports are used in the TCP [33,78] to name the ends of logical connections which carry long term conversations. For the purpose of providing services to unknown callers, a service contact port is defined. This list specifies the port used by the server process as its contact port. The contact port is sometimes called the "well-known port".

To the extent possible, these same port assignments are used with the UDP [33,76].

The assigned ports use a small portion of the possible port numbers. The assigned ports have all except the low order eight bits cleared to zero. The low order eight bits are specified here.

Port Assignments:
      Decimal   Keyword   Description                         References
      -------   -------   -----------                         ----------
      0                   Reserved                                 [JBP]
1-4 Unassigned [JBP] 5 RJE Remote Job Entry [13,34,JBP] 7 ECHO Echo [67,JBP] 9 DISCARD Discard [66,JBP] 11 USERS Active Users [62,JBP] 13 DAYTIME Daytime [65,JBP] 15 NETSTAT Who is up or NETSTAT [JBP] 17 QUOTE Quote of the Day [72,JBP] 19 CHARGEN Character Generator [64,JBP] 20 FTP File Transfer [Default Data] [33,68,JBP] 21 FTP File Transfer [Control] [33,68,JBP] 23 TELNET Telnet [84,JBP] 25 SMTP Simple Mail Transfer [33,74,JBP] 27 NSW-FE NSW User System FE [18,RHT] 29 MSG-ICP MSG ICP [60,RHT] 31 MSG-AUTH MSG Authentication [60,RHT] 33 Unassigned [JBP] 35 any printer server [JBP] 37 TIME Time [80,JBP] 39 RLP Resource Location Protocol [1,MA] 41 GRAPHICS Graphics [34,98,JBP] 42 NAMESERVER Host Name Server [33,71,JBP] 43 NICNAME Who Is [33,42,JAKE] 44 MPM-FLAGS MPM FLAGS Protocol [JBP] 45 MPM Message Processing Module [recv] [70,JBP] 46 MPM MPM [default send] [76,JBP] 47 NI-FTP NI FTP [104,SK] 49 LOGIN Login Host Protocol [PHD1] 51 LA-MAINT IMP Logical Address Maintenance [57,AGM] 53 DOMAIN Domain Name Server [PM1] 55 ISI-GL ISI Graphics Language [10,RB6] 57 any private terminal access [JBP] 59 any private file service [JBP] 61 NI-MAIL NI MAIL [8,SK] 63 VIA-FTP VIA Systems - FTP [DXD] 65 Unassigned [JBP] 67 Unassigned [JBP] 69 TFTP Trivial File Transfer [33,87,KRS] 71 NETRJS Remote Job Service [12,34,RTB] 72 NETRJS Remote Job Service [12,34,RTB] 73 NETRJS Remote Job Service [12,34,RTB] 74 NETRJS Remote Job Service [12,34,RTB] 75 any private dial out service [JBP] 77 any private RJE service [JBP] 79 FINGER Finger [34,40,KLH] 81 HOSTS2 Name Server [EAK1] 83 HOSTS2-NS MIT ML Device [DPR] 85 MIT-ML-DEV MIT ML Device [DPR] 87 MIT-ML-DEV Any Private Terminal Link [JBP] 89 SU-MIT-TG SU/MIT Telnet Gateway [MRC] 91 MIT-DOV MIT Dover Spooler [EBM] 93 DCP Device Control Protocol [DT15] 95 SUPDUP SUPDUP [21,MRC] 97 SWIFT-RVF Swift Remote Vitural File Protocol [MXR] 99 METAGRAM Metagram Relay [GEOF] 101 HOSTNAME NIC Host Name Server [33,41,JAKE] 103 Unassigned [JBP] 105 CSNET-NS Mailbox Name Nameserver [96,MHS1] 107 RTELNET Remote Telnet Service [73,JBP] 109 POP Post Office Protocol [110,JKR1] 111 SUNRPC SUN Remote Procedure Call [DXG] 113 AUTH Authentication Service [99,MCSJ] 115 SFTP Simple File Transfer Protocol [54,MXL] 116 Unassigned [JBP] 117 UUCP-PATH UUCP Path Service [32,MAE] 118-129 Unassigned [JBP] 131 Unassigned [JBP] 132-223 Reserved [JBP] 224-241 Unassigned [JBP] 243 SUR-MEAS Survey Measurement [9,AV] 245 LINK LINK [14,RDB2] 247-255 Unassigned [JBP]

Reynolds & Postel                                              [Page 14]


Assigned Numbers                                                 RFC 923
Port Numbers







Reynolds & Postel                                              [Page 15]


Assigned Numbers                                                 RFC 923
Autonomous System Numbers


ASSIGNED AUTONOMOUS SYSTEM NUMBERS

The Exterior Gateway Protocol (EGP) [93,90] specifies that groups of gateways may form autonomous systems. The EGP provides a 16-bit field for identifying such systems. The values of this field are registered here.

Autonomous System Numbers:
      Decimal   Name                                          References
      -------   ----                                          ----------
            0   Reserved                                           [JBP]
1 The BBN Gateways [MB] 2 DCN-AS [DLM1] 3 The MIT Gateways [LM8] 4 ISI-AS [JKR1] 5 Symbolics [CH2] 6 HIS-Multics [BIM,RK1] 7 UK-MOD [RNM1] 8 RICE-AS [PGM] 9 CMU-ROUTER [MA] 10 CSNET-PDN-AS [RDR4] 11 HARVARD [SXB1] 12 NYU-DOMAIN [EF5] 13 BRL-AS [RBN1] 14 COLUMBIA-GW [BC14] 15 NET DYNAMICS EXP [ZSU] 16 LBL [WG] 17 PURDUE-CS [KCS1] 18 UTEXAS [JSQ1] 19 CSS-DOMAIN [RR2] 20 UR [LB16] 21 RAND [JDG] 22 NOSC [RLB3] 23 RIACS-AS [DG28] 24 AMES-NAS-GW [MF31] 25 UCB [MK17] 26 CORNELL [BN9] 27 UMDNET [JWO1] 28 DFVLR-SYS [HDC1] 29 YALE-AS [JG46] 30 SRI-AICnet [PM4] 31 CIT-CS [AD22] 32 STANFORD [PA5] 33 DEC-WRL-AS [RKJ2] 34 UDEL-EECIS [NMM] 35 MICATON [JN2]
36-65534 Unassigned [JBP]

Reynolds & Postel                                              [Page 16]


Assigned Numbers                                                 RFC 923
Autonomous System Numbers


65535 Reserved [JBP]
Reynolds & Postel                                              [Page 17]


Assigned Numbers                                                 RFC 923
ARPANET Logical Addresses
ASSIGNED ARPANET LOGICAL ADDRESSES

The ARPANET facility for "logical addressing" is described in RFC 878 [56]. A portion of the possible logical addresses are reserved for standard uses.

There are 49,152 possible logical host addresses. Of these, 256 are reserved for assignment to well-known functions. Assignments for well-known functions are made by Joyce Reynolds. Assignments for other logical host addresses are made by the NIC.

Logical Address Assignments:
      Decimal    Description                                  References
      -------    -----------                                  ----------
      0          Reserved                                          [JBP]
      1          The BBN Gateways                                   [MB]
      2-255      Unassigned                                        [JBP]
256 Reserved [JBP]
Reynolds & Postel                                              [Page 18]


Assigned Numbers                                                 RFC 923
ARPANET Link Numbers
ASSIGNED ARPANET LINK NUMBERS

The word "link" here refers to a field in the original ARPANET Host/IMP interface leader. The link was originally defined as an 8-bit field. Later specifications defined this field as the "message-id" with a length of 12 bits. The name link now refers to the high order 8 bits of this 12-bit message-id field. The Host/IMP interface is defined in BBN Report 1822 [7].

The low-order 4 bits of the message-id field are called the sub-link. Unless explicitly specified otherwise for a particular protocol, there is no sender to receiver significance to the sub-link. The sender may use the sub-link in any way he chooses (it is returned in the RFNM by the destination IMP), the receiver should ignore the sub-link.

Link Assignments:
      Decimal   Description                                   References
      -------   -----------                                   ----------
      0         Reserved                                           [JBP]
1-149 Unassigned [JBP] 150 Xerox NS IDP [109,LLG] 151 Unassigned [JBP] 152 PARC Universal Protocol [11,HGM] 153 TIP Status Reporting [JGH] 154 TIP Accounting [JGH] 155 Internet Protocol [regular] [33,77,JBP] 156-158 Internet Protocol [experimental] [33,77,JBP] 159 Figleaf Link [JBW1] 160-195 Unassigned [JBP] 196-247 Experimental Protocols [JBP] 248-255 Network Maintenance [JGH]
Reynolds & Postel                                              [Page 19]


Assigned Numbers                                                 RFC 923
IEEE 802 SAP Numbers
IEEE 802 SAP NUMBERS OF INTEREST

Many of the networks of all classes are IEEE 802 Networks. These systems use a Service Access Point field in much the same way the ARPANET uses the "link" field. For further information and SAP number assignments, please contact: Mr. Maris Graube, Chairman, IEEE 802, c/o Tektronix, P.O. Box 500, D/S 50-473, Beaverton, Oregon, 97077.

Assignments:
      Service Access Point               Description          References
      --------------------               -----------          ----------
      decimal  binary
96 01100000 DOD IP [33,76,JBP]
Reynolds & Postel                                              [Page 20]


Assigned Numbers                                                 RFC 923
Ethernet Numbers
ETHERNET NUMBERS OF INTEREST

Many of the networks of all classes are Ethernets (10Mb) or Experimental Ethernets (3Mb). These systems use a message "type" field in much the same way the ARPANET uses the "link" field.

If you need an Ethernet number, contact the XEROX Corporation, Office Products Division, Network Systems Administration Office, 333 Coyote Hill Road, Palo Alto, California, 94304.

Assignments:
      Ethernet          Exp. Ethernet    Description          References
      -------------     -------------   -----------           ----------
      decimal  Hex      decimal  octal
512 0200 512 1000 XEROX PUP [1,HGM]
1536 0600 1536 3000 XEROX NS IDP [109,LLG] 2048 0800 513 1001 DOD IP [33,77,JBP] 2049 0801 - - X.75 Internet [LLG] 2050 0802 - - NBS Internet [LLG] 2051 0803 - - ECMA Internet [LLG] 2052 0804 - - Chaosnet [LLG] 2053 0805 - - X.25 Level 3 [LLG] 2054 0806 - - ARP [61,DCP1] 2076 081C - - Symbolics Private [DCP1] 32771 8003 - - Cronus VLN [100,DT15] 32772 8004 - - Cronus Direct [100,DT15]
       32774   8006        -      -     Nestar                     [LLG]
       32784   8010        -      -     Excelan                    [---]
       32821   8035        -      -     Reverse ARP             [36,JCM]
36864 9000 - - Loopback [LLG]

The standard for transmission of IP datagrams over Ethernets and Experimental Ethernets is specified in RFC 894 [48] and RFC 895 [63] respectively.
Reynolds & Postel                                              [Page 21]


Assigned Numbers                                                 RFC 923
Address Resolution Protocol
ASSIGNED ADDRESS RESOLUTION PROTOCOL PARAMETERS

The Address Resolution Protocol (ARP) specified in RFC 826 [61] has several parameters. The assigned values for these parameters are listed here.

Assignments:

Operation Code (op)

1 REQUEST 2 REPLY

Hardware Type (hrd)
         Type   Description                                   References
         ----   -----------                                   ----------
           1    Ethernet (10Mb)                                    [JBP]
2 Experimental Ethernet (3Mb) [JBP] 3 Amateur Radio AX.25 [PXK]

Protocol Type (pro)

Use the same codes as listed in the section called "Ethernet Numbers of Interest".
Reynolds & Postel                                              [Page 22]


Assigned Numbers                                                 RFC 923
Public Data Network Numbers
ASSIGNED PUBLIC DATA NETWORK NUMBERS

One of the Internet Class A Networks is the international system of Public Data Networks. This section lists the mapping between the Internet Addresses and the Public Data Network Addresses (X.121).

Assignments:
      Internet           Public Data Net    Description       References
      ---------------   -----------------   -----------       ----------
      014.000.000.000                       Reserved               [JBP]
014.000.000.001 3110-317-00035 00 PURDUE-TN [CAK] 014.000.000.002 3110-608-00027 00 UWISC-TN [CAK] 014.000.000.003 3110-302-00024 00 UDEL-TN [CAK] 014.000.000.004 2342-192-00149 23 UCL-VTEST [PK] 014.000.000.005 2342-192-00300 23 UCL-TG [PK] 014.000.000.006 2342-192-00300 25 UK-SATNET [PK] 014.000.000.007 3110-608-00024 00 UWISC-IBM [MHS1] 014.000.000.008 3110-213-00045 00 RAND-TN [MO2] 014.000.000.009 2342-192-00300 23 UCL-CS [PK] 014.000.000.010 3110-617-00025 00 BBN-VAN-GW [JD21] 014.000.000.011 2405-015-50300 00 CHALMERS [UXB] 014.000.000.012 3110-713-00165 00 RICE [PAM6] 014.000.000.013 3110-415-00261 00 DECWRL [PAM6] 014.000.000.014 3110-408-00051 00 IBM-SJ [SA1] 014.000.000.015 2041-117-01000 00 SHAPE [PG3] 014.000.000.016 2628-153-90075 00 DFVLR [HDC1] 014.000.000.017 3110-213-00032 00 ISI-VAN-GW [JD21] 014.000.000.018-014.255.255.254 Unassigned [JBP] 014.255.255.255 Reserved [JBP]

The standard for transmission of IP datagrams over the Public Data Network is specified in RFC 877 [52].
Reynolds & Postel                                              [Page 23]


Assigned Numbers                                                 RFC 923
Telnet Options
ASSIGNED TELNET OPTIONS

The Telnet Protocol has a number of options that may be negotiated. These options are listed here. "Official ARPA-Internet Protocols" [89] provides more detailed information.
   Options  Name                                              References
   -------  -----------------------                           ----------
      0     Binary Transmission                                 [82,JBP]
1 Echo [83,JBP] 2 Reconnection [5,JBP] 3 Suppress Go Ahead [86,JBP] 4 Approx Message Size Negotiation [34,JBP] 5 Status [85,JBP] 6 Timing Mark [87,JBP] 7 Remote Controlled Trans and Echo [79,JBP] 8 Output Line Width [3,JBP] 9 Output Page Size [4,JBP] 10 Output Carriage-Return Disposition [22,JBP] 11 Output Horizontal Tab Stops [26,JBP] 12 Output Horizontal Tab Disposition [25,JBP] 13 Output Formfeed Disposition [23,JBP] 14 Output Vertical Tabstops [28,JBP] 15 Output Vertical Tab Disposition [27,JBP] 16 Output Linefeed Disposition [24,JBP] 17 Extended ASCII [105,JBP] 18 Logout [19,MRC] 19 Byte Macro [29,JBP] 20 Data Entry Terminal [31,JBP] 22 SUPDUP [21,20,MRC] 22 SUPDUP Output [39,MRC] 23 Send Location [51,EAK1] 24 Terminal Type [97,MHS1] 25 End of Record [75,JBP]
255 Extended-Options-List [81,JBP]
Reynolds & Postel                                              [Page 24]


Assigned Numbers                                                 RFC 923
Machine Names
OFFICIAL MACHINE NAMES

These are the Official Machine Names as they appear in the NIC Host Table. Their use is described in RFC 810 [35].

ALTO AMDAHL-V7 BURROUGHS-B/29 C/30 C/70 CADLINC CADR CDC-173 DEC-10 DEC-1050 DEC-1080 DEC-1090 DEC-1090B DEC-1090T DEC-2020T DEC-2040 DEC-2040T DEC-2050T DEC-2060 DEC-2060T DEC-FALCON DPS8/70M FOONLY-F2 FOONLY-F3 FOONLY-F4 H-316 H-60/68 H-68 H-68/80 H-89 HONEYWELL-DPS-8/70M IBM-158 IBM-360/67 IBM-370/3033 IBM-4341 IBM-PC IMSAI K102 LSI-11 LSI-11/23 M6800 MAXC MLC NAS-AS/5 ONYX-09001 ONYX-28000 PDP-11 PDP-11/34 PDP-11/40 PDP-11/44 PDP-11/45 PDP-11/50 PDP-11/70 PERQ PLURIBUS ROLM-1666 SMI SUN-150 SYMBOLICS-3600 UNIVAC-1100 VAX-11/730 VAX-11/750 VAX-11/780 VAX-11/785 XEROX-8010

Reynolds & Postel                                              [Page 25]


Assigned Numbers                                                 RFC 923
Machine Names


Reynolds & Postel                                              [Page 26]


Assigned Numbers                                                 RFC 923
System Names
OFFICIAL SYSTEM NAMES

These are the Official System Names as they appear in the NIC Host Table. Their use is described in RFC 810 [35].

ASP AUGUST BKY CCP DOS/360 ELF EPOS EXEC-8 GCOS GPOS ITS INTERCOM INTERLISP KRONOS MCP MOS MPX-RT MULTICS MVT NOS NOS/BE OS/MVS OS/MVT RIG RSX-11M RT11 SCOPE SIGNAL SINTRAN TENEX TOPS-10 TOPS-20 TSS UNIX VM/370 VM/CMS VMS WAITS XDE
Reynolds & Postel                                              [Page 27]


Assigned Numbers                                                 RFC 923
Protocol Names
OFFICIAL PROTOCOL AND SERVICE NAMES

These are the Official Protocol Names. Their use is described in greater detail in RFC 810 [35].

ARGUS - ARGUS Protocol AUTH - Authentication Service
   BBN-RCC-MON         - BBN RCC Monitoring
   BR-SAT-MON          - Backroom SATNET Monitoring
   CFTP                - CFTP
CHAOS - CHAOS Protocol CHARGEN - Character Generator Protocol CLOCK - DCNET Time Server Protocol CSNET-NS - CSNET Mailbox Nameserver Protocol DAYTIME - Daytime Protocol DCN-MEAS - DCN Measurement Subsystems Protocol DCP - Device Control Protocol DISCARD - Discard Protocol DOMAIN - Domain Name Server ECHO - Echo Protocol EGP - Exterior Gateway Protocol EMCON - Emission Control Protocol FINGER - Finger Protocol FTP - File Transfer Protocol GGP - Gateway Gateway Protocol GRAPHICS - Graphics Protocol HMP - Host Monitoring Protocol HOST2-NS - Host2 Name Server HOSTNAME - Hostname Protocol ICMP - Internet Control Message Protocol IGP - Interior Gateway Protocol IP - Internet Protocol IPCU - Internet Packet Core Utility IPPC - Internet Pluribus Packet Core ISI-GL - ISI Graphics Language Protocol LA-MAINT - IMP Logical Address Maintenance LEAF-1 - Leaf-1 Protocol LEAF-2 - Leaf-2 Protocol LINK - Link Protocol LOGIN - Login Host Protocol
   METAGRAM            - Metagram Relay
   MIT-ML-DEV          - MIT ML Device
   MIT-SUBNET          - MIT Subnet Support
   MIT-DOV             - MIT Dover Spooler
MPM - Internet Message Protocol MPM-FLAGS - MP Flags Protocol MSG-AUTH - MSG Authentication Protocol MSG-ICP - MSG ICP Protocol

Reynolds & Postel                                              [Page 28]


Assigned Numbers                                                 RFC 923
Protocol Names


   MUX                 - Multiplexing Protocol
   NAMESERVER          - Host Name Server
   NETED               - Network Standard Text Editor
NETRJS - Remote Job Service NI-FTP - NI File Transfer Protocol NI-MAIL - NI Mail Protocol NICNAME - Who Is Protocol NSW-FE - NSW User System Front End NVP-II - Network Voice Protocol POP - Post Office Protocol PRM - Packet Radio Measurement PUP - PUP Protocol QUOTE - Quote of the Day Protocol RDP - Reliable Data Protocol RJE - Remote Job Entry RLP - Resource Location Protocol RTELNET - Remote Telnet Service RVD - Remote Virtual Disk Protocol SAT-EXPAK - Satnet and Backroom EXPAK SAT-MON - SATNET Monitoring SFTP - Simple File Transfer Protocol SMTP - Simple Mail Transfer Protocol ST - Stream Protocol SU-MIT-TG - SU/MIT Telnet Gateway Protocol SUNRPC - SUN Remote Procedure Call SUPDUP - SUPDUP Protocol SUR-MEAS - Survey Measurement SWIFT-RVF - Remote Virtual File Protocol TCP - Transmission Control Protocol TELNET - Telnet Protocol TFTP - Trivial File Transfer Protocol TIME - Time Server Protocol TRUNK-1 - Trunk-1 Protocol TRUNK-2 - Trunk-2 Protocol UCL - University College London Protocol UDP - User Datagram Protocol USERS - Active Users Protocol UUCP-PATH - UUCP Path Service VIA-FTP - VIA Systems-File Transfer Protocol WB-EXPAK - Wideband EXPAK WB-MON - Wideband Monitoring XNET - Cross Net Debugger XNS-IDP - Xerox NS IDP
Reynolds & Postel                                              [Page 29]


Assigned Numbers                                                 RFC 923
Terminal Type Names
OFFICIAL TERMINAL TYPE NAMES

These are the Official Terminal Type Names. Their use is described in RFC 884 [97].

ADDS-CONSUL-980 ADDS-REGENT-100 ADDS-REGENT-20 ADDS-REGENT-200 ADDS-REGENT-25 ADDS-REGENT-40 ADDS-REGENT-60 AMPEX-DIALOGUE-80 ANDERSON-JACOBSON-630 ANDERSON-JACOBSON-832 ANDERSON-JACOBSON-841 ANN-ARBOR-AMBASSADOR ARDS BITGRAPH BUSSIPLEXER CALCOMP-565 CDC-456 CDI-1030 CDI-1203 COMPUCOLOR-II CONCEPT-100 DATA-100 DATA-GENERAL-6053 DATAGRAPHIX-132A DATAMEDIA-1520 DATAMEDIA-1521 DATAMEDIA-2500 DATAMEDIA-3025 DATAMEDIA-3025A DATAMEDIA-3045 DATAMEDIA-3045A DATAMEDIA-DT80/1 DATAPOINT-2200 DATAPOINT-3000 DATAPOINT-3300 DATAPOINT-3360 DEC-DECWRITER-I DEC-DECWRITER-II DEC-GT40 DEC-GT40A DEC-GT42 DEC-LA120 DEC-LA30 DEC-LA36 DEC-LA38 DEC-VT05 DEC-VT100 DEC-VT132 DEC-VT50 DEC-VT50H DEC-VT52 DELTA-DATA-5000 DELTA-TELTERM-2 DIABLO-1620 DIABLO-1640 DIGILOG-333 DTC-300S EDT-1200 EXECUPORT-4000 EXECUPORT-4080 GENERAL-TERMINAL-100A GSI HAZELTINE-1500 HAZELTINE-1510 HAZELTINE-1520 HAZELTINE-2000 HP-2621 HP-2621A HP-2621P HP-2626 HP-2626A HP-2626P HP-2640 HP-2640A HP-2640B HP-2645 HP-2645A HP-2648 HP-2648A HP-2649 HP-2649A IBM-3101 IBM-3101-10 IBM-3275-2 IBM-3276-2 IBM-3276-3 IBM-3276-4 IBM-3277-2 IBM-3278-2 IBM-3278-3 IBM-3278-4 IBM-3278-5 IBM-3279-2 IBM-3279-3 IMLAC INFOTON-100 INFOTONKAS ISC-8001 LSI-ADM-3 LSI-ADM-31 LSI-ADM-3A LSI-ADM-42 MEMOREX-1240 MICROBEE MICROTERM-ACT-IV MICROTERM-ACT-V MICROTERM-MIME-1 MICROTERM-MIME-2 NETRONICS NETWORK-VIRTUAL-TERMINAL OMRON-8025AG PERKIN-ELMER-1100 PERKIN-ELMER-1200 PLASMA-PANEL QUME-SPRINT-5 SOROC SOROC-120 SOUTHWEST-TECHNICAL-PRODUCTS-CT82 SUPERBEE SUPERBEE-III-M TEC TEKTRONIX-4010 TEKTRONIX-4012 TEKTRONIX-4013 TEKTRONIX-4014 TEKTRONIX-4023 TEKTRONIX-4024 TEKTRONIX-4025 TEKTRONIX-4027 TELERAY-1061 TELERAY-3700 TELERAY-3800 TELETEC-DATASCREEN TELETERM-1030 TELETYPE-33 TELETYPE-35 TELETYPE-37 TELETYPE-38 TELETYPE-43 TELEVIDEO-912 TELEVIDEO-920 TELEVIDEO-920B TELEVIDEO-920C TELEVIDEO-950 TERMINET-1200 TERMINET-300 TI-700 TI-733 TI-735 TI-743 TI-745 TYCOM UNIVAC-DCT-500 VIDEO-SYSTEMS-1200 VIDEO-SYSTEMS-5000 VISUAL-200 XEROX-1720 ZENITH-H19 ZENTEC-30

Reynolds & Postel                                              [Page 30]


Assigned Numbers                                                 RFC 923
Terminal Type Names




Reynolds & Postel                                              [Page 31]


Assigned Numbers                                                 RFC 923
Terminal Type Names




Reynolds & Postel                                              [Page 32]


Assigned Numbers                                                 RFC 923
Terminal Type Names


Reynolds & Postel                                              [Page 33]


Assigned Numbers                                                 RFC 923
Documents
DOCUMENTS

[1] Accetta, Mike, "Resource Location Protocol", RFC 887,
Carnegie-Mellon University, December 1983.

[2] Aerospace, Internal Report, ATM-83(3920-01)-3, 1982.

[3] ARPANET Protocol Handbook, "Telnet Output Line Width Option",
NIC 20196, November 1973.

[4] ARPANET Protocol Handbook, "Telnet Output Page Size Option",
NIC 20197, November 1973.

[5] ARPANET Protocol Handbook, "Telnet Reconnection Option",
NIC 15391, August 1973.

[6] BBN Proposal No. P83-COM-40, "Packet Switched Overlay to
Tactical Multichannel/Satellite Systems".

[7] BBN, "Specifications for the Interconnection of a Host and an
IMP", Report 1822, Bolt Beranek and Newman, Cambridge, Massachusetts, revised, December 1981.

[8] Bennett, C., "A Simple NIFTP-Based Mail System", IEN 169,
University College, London, January 1981.

[9] Bhushan, A., "A Report on the Survey Project", RFC 530,
NIC 17375, June 1973.

[10] Bisbey, R., D. Hollingworth, and B. Britt, "Graphics Language
(version 2.1)", ISI/TM-80-18, USC/Information Sciences Institute, July 1980.

[11] Boggs, D., J. Shoch, E. Taft, and R. Metcalfe, "PUP: An
Internetwork Architecture", XEROX Palo Alto Research Center, CSL-79-10, July 1979; also in IEEE Transactions on Communication, Volume COM-28, Number 4, April 1980.

[12] Braden, R., "NETRJS Protocol", RFC 740, NIC 42423,
November 1977.

[13] Bressler, B., "Remote Job Entry Protocol", RFC 407, NIC
12112, October 72.

[14] Bressler, R., "Inter-Entity Communication -- An Experiment",
RFC 441, NIC 13773, January 1973.



Reynolds & Postel                                              [Page 34]


Assigned Numbers                                                 RFC 923
Documents


[15] Clark, D., "Revision of DSP Specification", Local Network
Note 9, Laboratory for Computer Science, MIT, June 1977.

[16] Cohen, D., "Specifications for the Network Voice Protocol",
RFC 741, ISI/RR 7539, USC/Information Sciences Institute, March 1976.

[17] Cohen, D. and J. Postel, "Multiplexing Protocol", IEN 90,
USC/Information Sciences Institute, May 1979.

[18] COMPASS, "Semi-Annual Technical Report", CADD-7603-0411,
Massachusetts Computer Associates, 4 March 1976. Also as, "National Software Works, Status Report No. 1," RADC-TR-76-276, Volume 1, September 1976. And COMPASS. "Second Semi-Annual Report," CADD-7608-1611, Massachusetts Computer Associates, August 1976.

[19] Crispin, Mark, "Telnet Logout Option", Stanford University-AI,
RFC 727, April 1977.

[20] Crispin, Mark, "Telnet SUPDUP Option", Stanford University-AI,
RFC 736, October 1977.

[21] Crispin, M., "SUPDUP Protocol", RFC 734, NIC 41953,
October 1977.

[22] Crocker, D., "Telnet Output Carriage-Return Disposition
Option", RFC 652, October 1974.

[23] Crocker, D., "Telnet Output Formfeed Disposition Option",
RFC 655, October 1974.

[24] Crocker, D., "Telnet Output Linefeed Disposition", RFC 658,
October 1974.

[25] Crocker, D., "Telnet Output Horizontal Tab Disposition
Option", RFC 654,

[26] Crocker, D., "Telnet Output Horizontal Tabstops Option",
RFC 653, October 1974.

[27] Crocker, D., "Telnet Output Vertical Tab Disposition Option",
RFC 657, October 1974.

[28] Crocker, D., "Telnet Output Vertical Tabstops Option",
RFC 656, October 1974.



Reynolds & Postel                                              [Page 35]


Assigned Numbers                                                 RFC 923
Documents


[29] Crocker, D.H. and R.H. Gumpertz, "Revised Telnet Byte Marco
Option", RFC 735, November 1977.

[30] Croft, W. J., "Unix Networking at Purdue", USENIX Conference,
1980.

[31] Day, John, "Telnet Data Entry Terminal Option", RFC 732,
September 1977.

[32] Elvy, Marc A., "UUCP Path Service", RFC 915, Harvard
University, October 1984.

[33] Feinler, E., "Internet Protocol Transition Workbook", Network
Information Center, SRI International, March 1982.

[34] Feinler, E. and J. Postel, eds., "ARPANET Protocol Handbook",
NIC 7104, for the Defense Communications Agency by SRI International, Menlo Park, California, Revised January 1978.

[35] Feinler, E., K. Harrenstien, and Z. Su, "DoD Internet Host
Table Specification", RFC 810, SRI International, March 1982.

[36] Finlayson, R., T. Mann, J. Mogul, and M. Theimer, "A Reverse
Address Resolution Protocol", RFC 903, Stanford University, June 1984.

[37] Forgie, J., "ST - A Proposed Internet Stream Protocol",
IEN 119, M.I.T. Lincoln Laboratory, September 1979.

[38] Forsdick, H., "CFTP", Network Message, Bolt Beranek and
Newman, January 1982.

[39] Greenberg, B., "Telnet SUPDUP-OUTPUT Option", RFC 749,
MIT-Multics, September 1978.

[40] Harrenstien, K., "Name/Finger", RFC 742, NIC 42758,
December 1977.

[41] Harrenstien, K., V. White, and E. Feinler, "Hostnames Server",
RFC 811, SRI International, March 1982.

[42] Harrenstien, K., and V. White, "Nicname/Whois", RFC 812, SRI
International, March 1982.

[43] Haverty, J., "XNET Formats for Internet Protocol Version 4",
IEN 158, October 1980.



Reynolds & Postel                                              [Page 36]


Assigned Numbers                                                 RFC 923
Documents


[44] Hinden, Robert M., "A Host Monitoring Protocol", RFC 869, Bolt
Beranek and Newman, December 1983.

[45] Hinden, R., and A. Sheltzer, "The DARPA Internet Gateway",
RFC 823, September 1982.

[46] Honeywell CISL, Internal Document, "AFSDSC Hyperchannel RPQ
Project Plan".

[47] Honeywell CISL, Internal Document, "Multics MR11 PFS".

[48] Hornig, C., "A Standard for the Transmission of IP Datagrams
over Ethernet Networks, RFC 894, Symbolics, April 1984.

[49] Hwang, Kai, W. J. Croft and G. H. Goble, "A Unix-Based Local
Computer Network with Load Balancing", IEEE Computer, April 1982.

[50] IBM Corporation, "Technical Reference Manual for the IBM PC
Network", 6322505, IBM, Boca Raton, Florida, 1984.

[51] Killian, E., "Telnet Send-Location Option", RFC 779,
April 1981.

[52] Korb, John T., "A Standard for the Transmission of IP
Datagrams Over Public Data Networks", RFC 877, Purdue University, September 1983.

[53] Leffler, Samuel J., et al., "4.2bsd Network Implementation
Notes", University of California, Berkeley, July 1983.

[54] Lottor, Mark K., "Simple File Transfer Protocol", RFC 913,
M.I.T., September 1984.

[55] Macgregor, W., and D. Tappan, "The CRONUS Virtual Local
Network", RFC 824, Bolt Beranek and Newman, August 1982.

[56] Malis, Andrew G. "The ARPANET 1822L Host Access Protocol",
RFC 878, BBN-CC, Cambridge, December 1983.

[57] Malis, A., "Logical Addressing Implementation Specification",
BBN Report 5256, pp 31-36, May 1983.

[58] Metcalfe, R.M. and D.R. Boggs, "Ethernet: Distributed Packet
Switching for Local Computer Networks", Communications of the ACM, 19 (7), pp 395-402, July 1976.



Reynolds & Postel                                              [Page 37]


Assigned Numbers                                                 RFC 923
Documents


[59] Mills, D., "DCN Local Network Protocols", RFC 891, Linkabit,
December 1983.

[60] NSW Protocol Committee, "MSG: The Interprocess Communication
Facility for the National Software Works", CADD-7612-2411, Massachusetts Computer Associates, BBN 3237, Bolt Beranek and Newman, Revised December 1976.

[61] Plummer, D., "An Ethernet Address Resolution Protocol or
Converting Network Protocol Addresses to 48-bit Ethernet Addresses for Transmission on Ethernet Hardware", RFC 826, MIT-LCS, November 1982.

[62] Postel, J., "Active Users", RFC 866, USC/Information Sciences
Institute, May 1983.

[63] Postel, J., "A Standard for the Transmission of IP Datagrams
over Experimental Ethernet Networks, RFC 895, USC/Information Sciences Institute, April 1984.

[64] Postel, J., "Character Generator Protocol", RFC 864,
USC/Information Sciences Institute, May 1983.

[65] Postel, J., "Daytime Protocol", RFC 867, USC/Information
Sciences Institute, May 1983.

[66] Postel, J., "Discard Protocol", RFC 863, USC/Information
Sciences Institute, May 1983.

[67] Postel, J., "Echo Protocol", RFC 862, USC/Information Sciences
Institute, May 1983.

[68] Postel, J., "File Transfer Protocol", RFC 765, IEN 149,
USC/Information Sciences Institute, June 1980.

[69] Postel, J., "Internet Control Message Protocol - DARPA
Internet Program Protocol Specification", RFC 792, USC/Information Sciences Institute, September 1981.

[70] Postel, J., "Internet Message Protocol", RFC 759, IEN 113,
USC/Information Sciences Institute, August 1980.

[71] Postel, J., "Name Server", IEN 116, USC/Information Sciences
Institute, August 1979.

[72] Postel, J., "Quote of the Day Protocol", RFC 865,
USC/Information Sciences Institute, May 1983.


Reynolds & Postel                                              [Page 38]


Assigned Numbers                                                 RFC 923
Documents


[73] Postel, J., "Remote Telnet Service", RFC 818, USC/Information
Sciences Institute, November 1982.

[74] Postel, J., "Simple Mail Transfer Protocol", RFC 821,
USC/Information Sciences Institute, August 1982.

[75] Postel, J., "Telnet End of Record Option", RFC 885,
USC/Information Sciences Institute, December 1983.

[76] Postel, J., "User Datagram Protocol", RFC 768 USC/Information
Sciences Institute, August 1980.

[77] Postel, J., ed., "Internet Protocol - DARPA Internet Program
Protocol Specification", RFC 791, USC/Information Sciences Institute, September 1981.

[78] Postel, J., ed., "Transmission Control Protocol - DARPA
Internet Program Protocol Specification", RFC 793, USC/Information Sciences Institute, September 1981.

[79] Postel, J. and D. Crocker, "Remote Controlled Transmission and
Echoing Telnet Option", RFC 726, March 1977.

[80] Postel, J., and K. Harrenstien, "Time Protocol", RFC 868,
USC/Information Sciences Institute, May 1983.

[81] Postel, J. and J. Reynolds, "Telnet Extended Options - List
Option", RFC 861, USC/Information Sciences Institute, May 1983.

[82] Postel, J. and J. Reynolds, "Telnet Binary Transmission",
RFC 856, USC/Information Sciences Institute, May 1983.

[83] Postel, J. and J. Reynolds, "Telnet Echo Option", RFC 857,
USC/Information Sciences Institute, May 1983.

[84] Postel, J., and J. Reynolds, "Telnet Protocol Specification",
RFC 854, USC/Information Sciences Institute, May 1983.

[85] Postel, J. and J. Reynolds, "Telnet Status Option", RFC 859,
USC/Information Sciences Institute, May 1983.

[86] Postel, J. and J. Reynolds, "Telnet Suppress Go Ahead Option",
RFC 858, USC/Information Sciences Institute, May 1983.

[87] Postel, J. and J. Reynolds, "Telnet Timing Mark Option",
RFC 860, USC/Information Sciences Institute, May 1983.


Reynolds & Postel                                              [Page 39]


Assigned Numbers                                                 RFC 923
Documents


[88] Reed, D., "Protocols for the LCS Network", Local Network Note
3, Laboratory for Computer Science, MIT, November 1976.

[89] Reynolds, J. and J. Postel, "Official ARPA-Internet
Protocols", RFC 924, USC/Information Sciences Institute, October 1984.

[90] Rosen, E., "Exterior Gateway Protocol" RFC 827, Bolt Beranek
and Newman, October 1982.

[91] Saltzer, J.H., "Design of a Ten-megabit/sec Token Ring
Network", MIT Laboratory for Computer Science Technical Report.

[92] Scott, Walter S., "2.9bsd/TIS Network Implementation",
Lawrence Livermore National Laboratory, September 1984.

[93] Seamonson, L.J., and E.C. Rosen, "STUB" Exterior Gateway
Protocol", RFC 888, BBN Communications Corporation, January 1984.

[94] Skelton, A., S. Holmgren, and D. Wood, "The MITRE Cablenet
Project", IEN 96, April 1979.

[95] Sollins, K., "The TFTP Protocol (Revision 2)", RFC 783,
MIT/LCS, June 1981.

[96] Solomon, M., L. Landweber, and D. Neuhengen, "The CSNET Name
Server", Computer Networks, v.6, n.3, pp. 161-172, July 1982.

[97] Solomon, M., and E. Wimmers, "Telnet Terminal Type Option",
RFC 884, University of Wisconsin, Madison, December 1983.

[98] Sproull, R., and E. Thomas, "A Networks Graphics Protocol",
NIC 24308, August 1974.

[99] StJohns, Mike, "Authentication Service", RFC 912, TPSC,
September 1984.

[100] Tappan, D.C., "The CRONUS Virtual Local Network", RFC 824,
Bolt Beranek and Newman, Inc., August 1982.

[101] "The Ethernet, a Local Area Network: Data Link Layer and
Physical Layer Specification", AA-K759B-TK, Digital Equipment Corporation, Maynard, MA.




Reynolds & Postel                                              [Page 40]


Assigned Numbers                                                 RFC 923
Documents


[102] "The Ethernet - A Local Area Network", Version 1.0, Digital
Equipment Corporation, Intel Corporation, Xerox Corporation, September 1980.

[103] "The Ethernet, A Local Area Network: Data Link Layer and
Physical Layer Specifications", Digital, Intel and Xerox, November 1982.

[104] The High Level Protocol Group, "A Network Independent File
Transfer Protocol", INWG Protocol Note 86, December 1977.

[105] Tovar, "Telnet Extended ASCII Option", RFC 698, Stanford
University-AI, July 1975.

[106] Velten, David, Robert Hinden, and Jack Sax, "Reliable Data
Protocol", RFC 908, BBN Communications Corporation, July 1984.

[107] Whelan, D., "The Caltech Computer Science Department Network",
5052:DF:82, Caltech Computer Science Department, 1982.

[108] XEROX, "The Ethernet, A Local Area Network: Data Link Layer
and Physical Layer Specification", X3T51/80-50, Xerox Corporation, Stamford, CT., October 1980.

[109] XEROX, "Internet Transport Protocols", XSIS 028112, Xerox
Corporation, Stamford, Connecticut, December 1981.

[110] Reynolds, J., "Post Office Protocol", RFC 918,
USC/Information Sciences Institute, October 1984.
Reynolds & Postel                                              [Page 41]


Assigned Numbers                                                 RFC 923
People
PEOPLE

[AB13] Alison Brown CORNELL alison@CORNELL.ARPA [AD22] Arlene DesJardins CIT arlene@CIT-20.ARPA
   [AG22]    Alfred Ganz         YALE      GANZ@YALE.ARPA
   [AGM]     Andy Malis          BBN       Malis@BBN-UNIX.ARPA
   [AL6]     Alexis Layton       CCA       alex@CCA-UNIX.ARPA
[APS] Anita Skelton MITRE skelton@MITRE.ARPA [AP] Alan Parker NRL parker@NRL-CSS.ARPA [AV] Al Vezza MIT AV@MIT-XX.ARPA [AW9] Albert Wong NPS AWong@USC-ISI.ARPA
   [AXC]     Albert Cheng        UIUC      acheng.uiuc@CSNET-RELAY.ARPA
   [AXG]     Atul Garg           HP        ---none---
   [AY5]     Akiharu Yasuda      DODIIS    dia@PAXRV-NES.ARPA
[BC14] Robert Cattani Columbia Cattani@COLUMBIA-20.ARPA [BG5] Bob Gilligan SRI Gilligan@SRI-KL.ARPA [BIM] Benson I. Margulies Honeywell Margulies@CISL.ARPA [BJN1] Bruce Nemnich TMC BJN@MIT-MC.ARPA [BML] Barry Leiner ARPA Leiner@USC-ISIA.ARPA [BN7] Bich T. Nguyen SRI btn@SRI-TSC.ARPA [BN9] Bill Nesheim CORNELL bill@CORNELL.ARPA [BP17] Bobbi Phillips SRI bobbi@SRI-TSC.ARPA
   [BXA]     Bobby W. Allen      YPG       WYMER@OFFICE.ARPA
   [CAK]     Chris Kent          PURDUE    Kent@PURDUE.ARPA
   [CBP]     Brian Pinkerton     Wisconson Brian@WISC-RSCH.ARPA
[CC2] Chase Cotton UDEL Cotton@UDEL-EE.ARPA [CH2] Charles Hornig Symbolics Hornig@MIT-MC.ARPA [CJW2] Cliff Weinstein LL cjw@LL-11.ARPA [CLH3] Charles Hedrick RUTGERS Hedrick@RUTGERS.ARPA [CMR] Craig Rogers ISI Rogers@USC-ISIB.ARPA [CP10] Craig Partridge BBN craig@BBN-UNIX.ARPA [CXL] Clifford A. Lynch UCB UCDLA@BBNCCY.ARPA [DAM1] David A. Mosher UCB Mosher@BERKELEY.ARPA
   [DCP1]    David Plummer       MIT       DCP@MIT-MC.ARPA
   [DT15]    Dan Tappan          BBN       Tappan@BBNG.ARPA
   [DDC2]    Dave Clark          MIT-LCS   Clark@MIT-MULTICS.ARPA
   [DG28]    David L. Gehrt      RIACS     Dave@RIACS.ARPA
[DH17] Douglas Hirsch BBN hirsch@BBN-UNIX.ARPA [DHH] Doug Hunt BBN DHunt@BBN-UNIX.ARPA [DJF] David J. Farber U of Del. Farber@UDEL-EE.ARPA [DJV1] Darrel J. Van Buer SDC vanbuer@ISI-VAXA.ARPA [DK2] Dean B. Krafft CORNELL Dean@CORNELL.ARPA [DLM1] David Mills LINKABIT Mills@USC-ISID.ARPA
   [DM11]    Dale McNeill        BBN       mcneill@BBN-UNIX.ARPA
   [DPR]     David Reed          MIT-LCS   DPR@MIT-XX.ARPA
   [DSW]     Dan Whelan          Caltech   Dan@CIT-20.ARPA
   [DXD]     Dennis J.W. Dube    VIA Systems ---none---
   [DXG]     David Goldberg      SMI       sun!dg@BERKELEY.ARPA


Reynolds & Postel                                              [Page 42]


Assigned Numbers                                                 RFC 923
People


   [EAK1]    Earl Killian        LLL       EAK@MIT-MC.ARPA
   [EBM]     Eliot Moss          MIT       EBM@MIT-XX.ARPA
   [EC5]     Ed Cain             DCEC      cain@EDN-UNIX.ARPA
[EF5] Ed Franceschini NYU Franceschini@NYU.ARPA [EHP] Ed Perry SRI Perry@SRI-KL.ARPA [FAS] Fred Segovich Compion fred@COMPION-VMS.ARPA [FLM2] F. Lee Maybaum MILNET Maybaum@DDN1 [GEOF] Geoff Goodfellow SRI Geoff@DARCOM-KA.ARPA [GC] Graham Campbell BNL gc@BNL.ARPA [GG11] George Goble Purdue ghg@PURDUE.ARPA [GH29] Gregory Hidley UCSD hidley@NOSC.ARPA [GIH] Glenn I. Hastie II SRI Hastie@SRI-SPAM.ARPA [GP10] George Pavel LLNL liaison@LLL-TIS.ARPA
   [GXL]     Guillermo A. Loyola IBM      Loyola%ibm-sj@CSNET-RELAY.ARPA
   [HA]      Howard Alt          AIDS      alt@AIDS-UNIX.ARPA
   [HCF2]    Harry Forsdick      BBN       Forsdick@BBNG.ARPA
[HDC1] Horst Clausen DFVLR Clausen@USC-ISID.ARPA [HDW2] Howard Wactlar CMU Wactlar@CMU-CS-A.ARPA
   [HGM]     Hallam Murray       PARC      Murray.PA@PARC-MAXC.ARPA
   [HM]      Hank Magnuski       ---       JOSE@PARC-MAXC.ARPA
   [JA1]     Jules P. Aronson    NLM       Aronson@NLM-MCS.ARPA
[JAKE] Jake Feinler SRI Feinler@SRI-KL.ARPA [JAR4] Jim Rees WASHINGTON JIM@WASHINGTON.ARPA
   [JAW3]    Jil Westcott        BBN       Westcott@BBNF.ARPA
   [JBP]     Jon Postel          ISI       Postel@USC-ISIF.ARPA
   [JBW1]    Joseph Walters, Jr. BBN       JWalters@BBN-UNIX.ARPA
   [JC11]    Jim Clifford        LANL      jrc@LANL.ARPA
   [JCM]     Jeff Mogul          STANFORD  Mogul@SU-SCORE.ARPA
   [JD21]    Jonathan Dreyer     BBN       JDreyer@BBN-UNIX.ARPA
   [JDG]     Jim Guyton          RAND      guyton@RAND-UNIX.ARPA
   [JEM]     Jim Mathis          SRI       Mathis@SRI-KL.ARPA
   [JFH2]    Jack Haverty        BBN       Haverty@BBN-UNIX.ARPA
   [JGH]     Jim Herman          BBN       Herman@BBN-UNIX.ARPA
   [JG46]    Jonathan Goodman    YALE      Goodman@YALE.ARPA
[JKR1] Joyce K. Reynolds ISI JKREYNOLDS@USC-ISIF.ARPA [JN2] Jose Nabielsky MITRE jnd@MITRE.ARPA [JO5] John O'Donnell YALE ODonnell@YALE.ARPA [JR17] John L. Robinson CANADA DREO-CRC@USC-ISID.ARPA [JRM1] John Mullen MITRE Mullen@MITRE.ARPA [JRS8] Jeffrey R. Schwab PURDUE jrs@PURDUE.ARPA [JS38] Joseph Sventek LBL j@LBL-CSAM.ARPA [JSG5] Jon Goodridge BBN jsg@BBN-UNIX.ARPA
   [JSQ1]    John S. Quarterman  UT        jsq@UT-SALLY.ARPA
   [JWF]     Jim Forgie          LL        Forgie@BBNC.ARPA
   [JWO1]    James W. O'Toole    UMD       james@MARYLAND.ARPA
[KCS1] Kevin C. Smallwood PURDUE kcs@PURDUE.ARPA [KLH] Ken Harrenstien SRI KLH@NIC.ARPA [KRS] Karen Sollins MIT Sollins@MIT-XX.ARPA [KTP] Kenneth T. Pogran BBN Pogran@BBN-UNIX.ARPA [KWP] Kevin W. Paetzold DEC Paetzold@DEC-MARLBORO.ARPA

Reynolds & Postel                                              [Page 43]


Assigned Numbers                                                 RFC 923
People


   [LB1]     Liudvikas Bukys     ROCHESTER Bukys@ROCHESTER.ARPA
   [LCN]     Lou Nelson          AEROSPACE Lou@AEROSPACE.ARPA
   [LCS]     Lou Schreier        SRI       Schreier@USC-ISID.ARPA
   [LH2]     Lincoln Hu          COLUMBIA  Hu@COLUMBIA-20.ARPA
   [LLG]     Larry Garlick       XEROX     Garlick@PARC-MAXC.ARPA
[LOU] Lou Salkind NYU Salkind@NYU.ARPA [LM8] Liza Martin MIT-LCS Martin@MIT-XX.ARPA [LRB] Larry Bierma NPRDC Bierma@NPRDC.ARPA
   [MA]      Mike Accetta        CMU       Accetta@CMU-CS-A.ARPA
   [MAB4]    Mark Brown          USC       Mark@USC-ECLB.ARPA
   [MAE]     Marc A. Elvy        Harvard   Elvy@HARVARD.ARPA
[MBG] Michael Greenwald MIT-LCS Greenwald@MIT-MULTICS.ARPA [MB] Michael Brescia BBN Brescia@BBN-UNIX.ARPA [MCSJ] Mike StJohns AFDSC StJohns@MIT-MULTICS.ARPA [MDC] Martin D. Connor MIT AI Marty@MIT-MC.ARPA [MF31] Martin J. Fouts NASA-Ames nep.fouts@AMES-AMELIA.ARPA [MH12] Mark Horton ATT mark@BERKELEY.ARPA
   [MHS1]    Marvin Solomon      WISC      Solomon@UWISC.ARPA
   [MJM2]    Mike Muuss          BRL       Mike@BRL.ARPA
   [MK17]    Mike Karels         UCB       Karels@UCB-ARPA.ARPA
[MO2] Michael O'Brien RAND OBrien@RAND-UNIX.ARPA [MO14] Michael O'Donnel JHU Odonnel%jhu@CSNET-RELAY.ARPA [MRC] Mark Crispin Stanford Admin.MRC@SU-SCORE.ARPA [MS9] Martin Schoffstall CADMUS cadmus!schoff@SEISMO.ARPA [MTR] Marshall Rose Irvine MRose.UCI@RAND-RELAY.ARPA [MXL] Mark Lottor MIT MKL@MIT-XX.ARPA [MXM] Marc M. Meilleur COINS COINS@USC-ISI.ARPA [MXP] Michael K. Peterson HUGHES scgvaxd!mkp@CIT-VAX.ARPA [MXR] Mark A. Rosenstein MIT mar@MIT-BORAX.ARPA [MXS] Marc Shapiro INRIA Shapiro@CMU-CS-C.ARPA [NC3] J. Noel Chiappa MIT JNC@MIT-XX.ARPA
   [NMM]     Mike Minnich        UDELEE    MMinnich@UDEL-EE.ARPA
   [NXK]     Neil Katin          HP        hpda.neil@BERKELEY.ARPA
   [PA5]     Philip Almquist     Stanford  Almquist@SU-SCORE.ARPA
[PAM6] Paul McNabb RICE pam@PURDUE.ARPA [PG3] Phill Gross LINKABIT gross@DCN7.ARPA [PGM] Paul G. Milazzo RICE Milazzo@RICE.ARPA [PHD1] Pieter Ditmars BBN pditmars@BBN-UNIX.ARPA [PK] Peter Kirstein UCL Kirstein@USC-ISIA.ARPA [PM1] Paul Mockapetris ISI Mockapetris@USC-ISIF.ARPA [PM4] Paul Martin SRI PMartin@SRI-AI.ARPA [PS3] Paal Spilling NDRE Paal@NTA-VAX.ARPA [PXA] Phillip G. Apley Bitstream PGA@MIT-OZ.ARPA [PXB] Pat Boyle UBC boyle.ubc@CSNET-RELAY.ARPA [PXK] Philip R. Karn, Jr. BCR allegra!karn@BERKELEY.ARPA [PXM] Pat Marques NSRDC marques@DTRC.ARPA

Reynolds & Postel                                              [Page 44]


Assigned Numbers                                                 RFC 923
People


   [PXN]     Peter Nellessen     SIEMENS   crtvax!pn@CMU-CS-SPICE.ARPA
   [RA11]    Rick Adams          CCI       rlgvax!ra@SEISMO.ARPA
   [RB6]     Richard Bisbey      ISI       Bisbey@USC-ISIB.ARPA
[RBN1] Ronald Natalie, Jr. BRL ron@BRL-TGR.ARPA [RBW] Richard B. Wales UCLA wales@UCLA-LOCUS.ARPA [RC7] Robert Cole UCL robert@UCL-CS.ARPA [RDB2] Robert Bressler BBN Bressler@BBN-UNIX.ARPA [RDR4] Dennis Rockwell BBN DRockwell@BBN-UNIX.ARPA [REK2] Robert Kahn ARPA Kahn@USC-ISIA.ARPA [RF1] Randy Frank UTAH Frank@UTAH-20.ARPA [RFD1] Robert F. Donnelly ARDC donnelly@ARDC.ARPA
   [RH6]     Robert Hinden       BBN       Hinden@BBN-UNIX.ARPA
   [RH60]    Roger Hale          MIT       Network%MIT-BUGS@MIT-MC.ARPA
   [RHT]     Robert Thomas       BBN       BThomas@BBNG.ARPA
[RK1] Richard Kovalcik Honeywell Kovalcik@MIT-MULTICS.ARPA [RKJ2] Richard Johnsson DEC johnsson@DECWRL.ARPA [RLB1] Bob Brown USRA rlb@AMES-VMSB.ARPA [RLB3] Ronald L. Broersma NOSC Ron@NOSC.ARPA [RLH2] Ronald L. Hartung NSWC ron@NSWC-WO.ARPA [RLS6] Ronald L. Smith COINS COINS@USC-ISIA.ARPA [RNM1] Neil MacKenzie RSRE T45@USC-ISID.ARPA
   [RR2]     Raleigh Romine      Teledyne  romine@SEISMO.ARPA
   [RR18]    Ron Reisor          UDEL      ron.udel-cc-relay@UDEL.ARPA
   [RS23]    Russel Sandberg     WISC      root@UWISC.ARPA
   [RTB]     Bob Braden          UCLA      Braden@USC-ISIA.ARPA
   [RWS4]    Robert W. Scheifler ARGUS     RWS@MIT-XX.ARPA
[SA1] Sten Andler ARPA andler.ibm-sj@CSNET-RELAY.ARPA [SC3] Steve Casner ISI Casner@USC-ISIB.ARPA [SGC] Steve Chipman BBN Chipman@BBNA.ARPA [SK] Steve Kille UCL UKSAT@USC-ISID.ARPA [SM6] Sean McLinden DSL SMcLinden@CADRE.ARPA [SMF] Steven M. Feldman TYMNET feldman%ucbarpa@BERKELEY.ARPA [SXB] Steve Byrne TARTAN Byrne@CMU-CS-C.ARPA
   [SXB1]    Scott Bradner       HARVARD   bradner@HARV.10.ARPA
   [SXM]     Scott Marcus        Spartacus ---none---
   [TBS]     Claude S. Steffey   WSMR      csteffey@WSMR70A.ARPA
[TC4] Tony Cincotta DTNSRDC tony@NALCON.ARPA
   [TF6]     Thomas Ferrin       UCSF      ucsfcgl!tef@BERKELEY.ARPA
   [TW11]    Tom Wadlow          LLL       TAW@S1-A.ARPA
   [TXN]     Todd Nugent         U Chicago Nugent@ANL-MCS.ARPA
[UXB] Ulf Bilting CHALMERS bilting@PURDUE.ARPA [WG] Wayne Graves LBL wayne@LBL-CSAM.ARPA [WIM] William Macgregor BBN macg@BBN.ARPA [WNJ] Bill Joy SMI sun!wnj@BERKELEY.ARPA [WXL] William Lampeter UR bill@ROCHESTER.ARPA [ZSU] Zaw-Sing Su SRI ZSu@SRI-TSC.ARPA



Reynolds & Postel                                              [Page 45]


Assigned Numbers                                                 RFC 923
Appendix A


APPENDIX A

Network Numbers

The network numbers in class A, B, and C network addresses are allocated among Research, Defense, Government (Non-Defense) and Commercial uses.

Class A (highest-order bit 0)

Research allocation: 8
         Defense allocation:             24
         Government allocation:          24
         Commercial allocation:          94
         Reserved Addresses:   (0, 127)
Total 128

Class B (highest-order bits 1-0)
         Research allocation:          1024
         Defense allocation:           3072
Government allocation: 3072 Commercial allocation: 12286 Reserved Addresses: (0, 16383) Total 16384

Class C (highest-order bits 1-1-0)

Research allocation: 65536 Defense allocation: 458725 Government allocation: 458725 Commercial allocation: 1572862 Reserved Addresses: (0, 2097151) Total 2097152

Class D (highest-order bits 1-1-1)

All addresses in this class are reserved for future use.

Within the Research community, network identifiers will only be granted to applicants who show evidence that they are acquiring standard Bolt Beranek and Newman gateway software or have implemented or are acquiring a gateway meeting the Exterior Gateway Protocol requirements. Acquisition of the Berkeley BSD 4.2 UNIX software might be considered evidence of the latter. Experimental networks which later become operational need not be renumbered. Rather, the identifiers could be moved from Research to Defense, Government or Commercial status. Thus, network identifiers may change state among Research, Defense, Government and Commercial, but the number of identifiers allocated to each use must remain within the limits indicated above. To make possible this fluid assignment, the network identifier spaces are not allocated by simple partition, but rather by specific assignment.




Reynolds & Postel                                              [Page 46]


Assigned Numbers                                                 RFC 923
Appendix A



Protocol Identifiers

These assignments are shared by the four communities.

Port Numbers

These assignments are shared by the four communities.

ARPANET Link Numbers

These assignments are shared by the four communities.

IP Version Numbers

These assignments are shared by the four communities.

TCP, IP and Telnet Option Identifiers

These assignments are shared by the four communities.

Implementation:

Joyce Reynolds is the coordinator for all number assignments.

















Reynolds & Postel [Page 47]


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