RFC 900: Assigned Numbers (original) (raw)
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Obsoleted by: 923 HISTORIC
Network Working Group J. Reynolds Request for Comments: 900 J. Postel ISI Obsoletes RFCs: 870, 820, June 1984 790, 776, 770, 762, 758, 755, 750, 739, 604, 503, 433, 349 Obsoletes IENs: 127, 117, 93
ASSIGNED NUMBERSStatus of this Memo
This memo is an official status report on the numbers used in protocols in the ARPA-Internet community.
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.ARPAMost 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" [[31](#ref-31 ""Internet Protocol Transition Workbook"")] or in the old "ARPANET Protocol Handbook" [[32](#ref-32 ""ARPANET Protocol Handbook"")] prepared by the NIC. Some of the items listed are undocumented. Further information on protocols can be found in the memo "Official Protocols" [[83](#ref-83 ""Official Protocols"")].
In all cases the name and mailbox of the responsible individual is indicated. In the lists that follow, a bracketed entry, e.g., [[31](#ref-31 ""Internet Protocol Transition Workbook""),iii], at the right hand margin of the page indicates a reference for the listed protocol, where the number cites the document and the "iii" cites the person. Whenever possible, this "iii" is a NIC Ident.
Reynolds & Postel [Page 1]
Assigned Numbers RFC 900 Network Numbers
ASSIGNED NETWORK NUMBERSThe network numbers listed here are used as internet addresses by the Internet Protocol (IP) [[31](#ref-31 ""Internet Protocol Transition Workbook""),[71](#ref-71 ""Internet Protocol - DARPA Internet Program Protocol Specification"")]. 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.Reynolds & Postel [Page 2]
Assigned Numbers RFC 900 Network Numbers
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.
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 preceeding 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 preceeding the name, and the network name will be suffixed "-TEMP".
Reynolds & Postel [Page 3]
Assigned Numbers RFC 900 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](#ref-7 ""Specifications for the Interconnection of a Host and an IMP""),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](#ref-7 ""Specifications for the Interconnection of a Host and an IMP""),[32](#ref-32 ""ARPANET Protocol Handbook""),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](#ref-15 ""Revision of DSP Specification""),[82](#ref-82 ""Protocols for the LCS Network""),DDC2]
D 023.rrr.rrr.rrr DDN-TC-NET DDN-TestCell-Network [DXH]
D 024.rrr.rrr.rrr MINET MINET [[7](#ref-7 ""Specifications for the Interconnection of a Host and an IMP""),DHH]
R 025.rrr.rrr.rrr RSRE-EXP RSRE Experimental [NM]
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-022.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 900 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 [[52](#ref-52 ""DCN Local-Network Protocols""),DLM1]
R 128.005.rrr.rrr FORDNET FORD DCNET [[52](#ref-52 ""DCN Local-Network Protocols""),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 [[52](#ref-52 ""DCN Local-Network Protocols""),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 [[48](#ref-48 ""The CRONUS Virtual Local Network""),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](#ref-7 ""Specifications for the Interconnection of a Host and an IMP""),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 [[86](#ref-86 ""The MITRE Cablenet Project""),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 [[43](#ref-43 ""AFSDSC Hyperchannel RPQ Project Plan""),[44](#ref-44 ""Multics MR11 PFS""),RK1]
R 128.036.rrr.rrr YALE-NET YALE NET [[96](#ref-96 ""The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specification""),JO5]
D 128.037.rrr.rrr YPG-NET Yuma Proving Grounds [[7](#ref-7 ""Specifications for the Interconnection of a Host and an IMP""),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 Net [[52](#ref-52 ""DCN Local-Network Protocols""),[96](#ref-96 ""The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specification""),PGM]
R 128.043.rrr.rrr CRANET CANADA REF ARPANET [[7](#ref-7 ""Specifications for the Interconnection of a Host and an IMP""),JR17]Reynolds & Postel [Page 5]
Assigned Numbers RFC 900 Network Numbers
D 128.044.rrr.rrr WSMR-NET White Sands Network [TBS]
D 128.045.rrr.rrr DODIIS-S1 DoD INTEL INFO SYS [AY5]
D 128.046.rrr.rrr DODIIS-S2 DoD INTEL INFO SYS [AY5]
D 128.047.rrr.rrr TACTNET Tactical Packet Net [[6](#ref-6 ""Packet Switched Overlay to Tactical Multichannel/Satellite Systems""),KTP]
C*128.048.rrr.rrr UCDLA-NET UCDLA MELVYL Network [[7](#ref-7 ""Specifications for the Interconnection of a Host and an IMP""),CXL]
R 128.049.rrr.rrr NOSC-ETHER NOSC Ethernet [[96](#ref-96 ""The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specification""),RLB3]
G 128.050.rrr.rrr COINS Network COINS On-Line Intel Net [RXS]
G 128.051.rrr.rrr COINSTNET COINS TEST NETWORK [RXS]
R 128.052.rrr.rrr MIT-AI-NET MIT AI NET [[96](#ref-96 ""The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specification""),MDC]
R 128.053.rrr.rrr SAC-PR-2 SAC PRNET Number 2 [BG5]
128.054.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]
192.004.000.rrr-192.004.255.rrr Unassigned [JBP]
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 [[92](#ref-92 ""The Ethernet, a Local Area Network: Data Link Layer and Physical Layer Specification""),KWP]
R 192.005.006.rrr DEC-MRRAD DEC Marlboro Developmt [[92](#ref-92 ""The Ethernet, a Local Area Network: Data Link Layer and Physical Layer Specification""),KWP]
R 192.005.007.rrr CIT-CS-NET Caltech-CS-Net [[95](#ref-95 ""The Caltech Computer Science Department Network""),DSW]
R 192.005.008.rrr WASHINGTON University of Washington [JAR4]
R 192.005.009.rrr AERONET Aerospace Labnet [[2](#ref-2 "ATM-83(3920-01)-3"),LCN]
R 192.005.010.rrr ECLNET USC-ECL-CAMPUS-NET [MXB]
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 CCNET Compion Network [[96](#ref-96 ""The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specification""),FAS]
R 192.005.014.rrr RAND-NET RAND Network [[96](#ref-96 ""The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specification""),JDG]
R 192.005.015.rrr NYU-NET NYU Network [EF5]
R 192.005.016.rrr LANL-LAND Los Alamos Dev LAN [[96](#ref-96 ""The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specification""),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 [MXR]
R 192.005.020.rrr CISLTTYNET Honeywell [RK1]
D 192.005.021.rrr BRLNET1 BRLNET1 [[7](#ref-7 ""Specifications for the Interconnection of a Host and an IMP""),MJM2]
D 192.005.022.rrr BRLNET2 BRLNET2 [[7](#ref-7 ""Specifications for the Interconnection of a Host and an IMP""),MJM2]
D 192.005.023.rrr BRLNET3 BRLNET3 [[7](#ref-7 ""Specifications for the Interconnection of a Host and an IMP""),MJM2]
D 192.005.024.rrr BRLNET4 BRLNET4 [[7](#ref-7 ""Specifications for the Interconnection of a Host and an IMP""),MJM2]
D 192.005.025.rrr BRLNET5 BRLNET5 [[7](#ref-7 ""Specifications for the Interconnection of a Host and an IMP""),MJM2]
D 192.005.026.rrr NSRDCOA-NET NSRDC Office Auto Net [TC4]Reynolds & Postel [Page 6]
Assigned Numbers RFC 900 Network Numbers
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 [[43](#ref-43 ""AFSDSC Hyperchannel RPQ Project Plan""),[44](#ref-44 ""Multics MR11 PFS""),RK1]
R 192.005.033.rrr CISLTESTNET3 Honeywell [[27](#ref-27 ""Telnet Output Vertical Tab Disposition Option""),[28](#ref-28 ""Telnet Output Vertical Tabstops Option""),RK1]
R 192.005.034.rrr CISLTESTNET4 Honeywell [[27](#ref-27 ""Telnet Output Vertical Tab Disposition Option""),[28](#ref-28 ""Telnet Output Vertical Tabstops Option""),RK1]
R 192.005.035.rrr RIACS USRA [[96](#ref-96 ""The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specification""),RLB1]
R 192.005.036.rrr CORNELL-CS CORNELL CS Research [[96](#ref-96 ""The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specification""),DK2]
R 192.005.037.rrr UR-CS-NET U of R CS 3Mb Net [[51](#ref-51 ""Ethernet: Distributed Packet Switching for Local Computer Networks""),LB1]
R 192.005.038.rrr SRI-C3ETHER SRI-AITAD C3ETHERNET [[96](#ref-96 ""The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specification""),BG5]
R 192.005.039.rrr UDEL-EECIS Udel EECIS LAN [[93](#ref-93 ""The Ethernet - A Local Area Network""),CC2]
R 192.005.040.rrr PUCC-NET-A PURDUE Comp Cntr Net [JXS]
D 192.005.041.rrr WISLAN WIS Research LAN [[86](#ref-86 ""The MITRE Cablenet Project""),JRM1]
D 192.005.042.rrr AFDSC-HYPER AFDSC Hypernet [MCSJ]
R 192.005.043.rrr CUCSNET Columbia CS Net [[96](#ref-96 ""The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specification""),LH2]
R 192.005.044.rrr Farber-PC-Net Farber PC Network [DJF]
R 192.005.045.rrr AIDS-NET AI&DS Network [[96](#ref-96 ""The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specification""),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 [[96](#ref-96 ""The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specification""),CAK]
R 192.005.049.rrr UCSF Univ of Calif, San Fran [[93](#ref-93 ""The Ethernet - A Local Area Network""),TXF]
R 192.005.050.rrr CTH-CS-NET Chalmers CSN Local Net [[93](#ref-93 ""The Ethernet - A Local Area Network""),[UXB](#ref-UXB)]
R 192.005.051.rrr Theorynet Cornell Theory Center [[96](#ref-96 ""The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specification""),[AB13](#ref-AB13)]
R 192.005.052.rrr NLM-ETHER NLM-LHNCBC-ETHERNET [[71](#ref-71 ""Internet Protocol - DARPA Internet Program Protocol Specification""),JA1]
R 192.005.053.rrr UR-CS-ETHER U of R CS 10Mb Net [[51](#ref-51 ""Ethernet: Distributed Packet Switching for Local Computer Networks""),LB1]
R 192.005.054.rrr AERO-A6 Aerospace [[2](#ref-2 "ATM-83(3920-01)-3"),LCN]
R 192.005.055.rrr UCLA-CECS UCLA-CECS Network [[96](#ref-96 ""The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specification""),RBW]
C 192.005.056.rrr TARTAN-NET Tartan Labs [SXB]
R 192.005.057.rrr UDEL-CC UDEL Comp Center [[93](#ref-93 ""The Ethernet - A Local Area Network""),RXR]
R 192.005.058.rrr CSNET-PDN CSNET X.25 Network [[47](#ref-47 ""A Standard for the Transmission of IP Datagrams Over Public Data Networks""),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 [[92](#ref-92 ""The Ethernet, a Local Area Network: Data Link Layer and Physical Layer Specification""), MXF]
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 [[93](#ref-93 ""The Ethernet - A Local Area Network""),GXH]
R 192.005.068.rrr AERO-130 AEROSPACE-130 [LCN]
R 192.005.069.rrr UIUC-NET Univ of IL at Urbana [[96](#ref-96 ""The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specification""),AXC]
G 192.005.070.rrr CELAN COINS Exper. LAN [MXM]
R 192.005.071.rrr SAC-ETHER SAC C3 Ethernet [[96](#ref-96 ""The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specification""),BG5]
R*192.005.072.rrr-192.005.087.rrr U Chicago [TXN]
R 192.005.088.rrr YALE-EE-NET YALE-EE-NET [[96](#ref-96 ""The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specification""),AXG1]
R 192.005.089.rrr UTEXAS U. Texas Austin Net [[96](#ref-96 ""The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specification""),JSQ1]
192.005.090.rrr-192.005.255.rrr Unassigned [JBP]Reynolds & Postel [Page 7]
Assigned Numbers RFC 900 Network Numbers
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 [[96](#ref-96 ""The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specification""),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 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 [[96](#ref-96 ""The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specification""),AMS1]
C*192.012.004.rrr SCG-NET Hughes SCG Net [[96](#ref-96 ""The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specification""),[MXP](#ref-MXP)]
192.012.005.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]Network Totals
Assigned for the ARPA-Internet and the DDN-Internet
Class A B C Total
Research 7 36 824 867
Defense 4 14 9 27
Government 0 2 1 3
Commercial 2 0 3 5
Total 13 52 837 902Reynolds & Postel [Page 8]
Assigned Numbers RFC 900 Network Numbers
Allocated for Internet and Independent Uses
Class A B C Total
Research 7 36 845 888
Defense 4 14 9 27
Government 0 2 1 3
Commercial 2 1 1543 1546
Total 13 53 2398 2464
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 2113658Reynolds & Postel [Page 9]
Assigned Numbers RFC 900 Version Numbers
ASSIGNED VERSION NUMBERSIn the Internet Protocol (IP) [[31](#ref-31 ""Internet Protocol Transition Workbook""),[71](#ref-71 ""Internet Protocol - DARPA Internet Program Protocol Specification"")] 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](#ref-31 ""Internet Protocol Transition Workbook""),[71](#ref-71 ""Internet Protocol - DARPA Internet Program Protocol Specification""),JBP]
5 ST ST Datagram Mode [[34](#ref-34 ""ST - A Proposed Internet Stream Protocol""),JWF]
6-14 Unassigned [JBP]
15 Reserved [JBP]Reynolds & Postel [Page 10]
Assigned Numbers RFC 900 Protocol Numbers
ASSIGNED PROTOCOL NUMBERSIn the Internet Protocol (IP) [[31](#ref-31 ""Internet Protocol Transition Workbook""),[71](#ref-71 ""Internet Protocol - DARPA Internet Program Protocol Specification"")] 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 [[63](#ref-63 ""Internet Control Message Protocol - DARPA Internet Program Protocol Specification""),JBP]
2 Unassigned [JBP]
3 GGP Gateway-to-Gateway [[42](#ref-42 ""The DARPA Internet Gateway""),MB]
4 Unassigned [JBP]
5 ST Stream [[34](#ref-34 ""ST - A Proposed Internet Stream Protocol""),JWF]
6 TCP Transmission Control [[31](#ref-31 ""Internet Protocol Transition Workbook""),[72](#ref-72 ""Transmission Control Protocol - DARPA Internet Program Protocol Specification""),JBP]
7 UCL [PK]
8 EGP Exterior Gateway Protocol [[85](#ref-85 ""STUB""),DLM1]
9 IGP any private interior gateway [JBP]
10 BBN RCC Monitoring [SGC]
11 NVP-II Network Voice Protocol [[16](#ref-16 ""Specifications for the Network Voice Protocol""),SC3]
12 PUP [[11](#ref-11 ""PUP: An Internetwork Architecture""),[HGM](#ref-HGM)]
13 ARGUS [RWS4]
14 Unassigned [JBP]
15 XNET Cross Net Debugger [[40](#ref-40 ""XNET Formats for Internet Protocol Version 4""),JFH2]
16 Chaos Stream [NC3]
17 UDP User Datagram [[31](#ref-31 ""Internet Protocol Transition Workbook""),[70](#ref-70 ""User Datagram Protocol""),JBP]
18 MUX Multiplexing [[17](#ref-17 ""Multiplexing Protocol""),JBP]
19 DCN Measurement Subsystems [DLM1]
20 HMP Host Monitoring [[41](#ref-41 ""A Host Monitoring Protocol""),RH6]
21 Packet Radio Measurement [ZSU]
22 XEROX NS IDP [[97](#ref-97 ""Internet Transport Protocols""),LLG]
23 Trunk-1 [BML]
24 Trunk-2 [BML]
25 Leaf-1 [BML]
26 Leaf-2 [BML]
27-60 Unassigned [JBP]
61 any host internal protocol [JBP]
62 CFTP [[35](#ref-35 ""CFTP""),HCF2]
63 any local network [JBP]
64 SATNET and Backroom EXPAK [DM11]
65 MIT Subnet Support [NC3]
66 RVD MIT Remote Virtual Disk Protocol [MBG]
67 Internet Pluribus Packet Core [DM11]
68 Unassigned [JBP]
69 SATNET Monitoring [DM11]
70 Unassigned [JBP]Reynolds & Postel [Page 11]
Assigned Numbers RFC 900 Protocol Numbers
71 Internet Packet Core Utility [DM11]
72-75 Unassigned [JBP]
76 Backroom SATNET Monitoring [DM11]
77 Unassigned [JBP]
78 WIDEBAND Monitoring [DM11]
79 WIDEBAND EXPAK [DM11]
80-254 Unassigned [JBP]
255 Reserved [JBP]Reynolds & Postel [Page 12]
Assigned Numbers RFC 900 Port Numbers
ASSIGNED PORT NUMBERSPorts are used in the TCP [[31](#ref-31 ""Internet Protocol Transition Workbook""),[72](#ref-72 ""Transmission Control Protocol - DARPA Internet Program Protocol Specification"")] 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 [[31](#ref-31 ""Internet Protocol Transition Workbook""),[70](#ref-70 ""User Datagram Protocol"")].
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](#ref-13 ""Remote Job Entry Protocol""),[32](#ref-32 ""ARPANET Protocol Handbook""),JBP]
7 ECHO Echo [[61](#ref-61 ""Echo Protocol""),JBP]
9 DISCARD Discard [[60](#ref-60 ""Discard Protocol""),JBP]
11 USERS Active Users [[56](#ref-56 ""Active Users""),JBP]
13 DAYTIME Daytime [[59](#ref-59 ""Daytime Protocol""),JBP]
15 NETSTAT Who is up or NETSTAT [JBP]
17 QUOTE Quote of the Day [[66](#ref-66 ""Quote of the Day Protocol""),JBP]
19 CHARGEN Character Generator [[58](#ref-58 ""Character Generator Protocol""),JBP]
20 FTP File Transfer [Default Data] [[31](#ref-31 ""Internet Protocol Transition Workbook""),[62](#ref-62 ""File Transfer Protocol""),JBP]
21 FTP File Transfer [Control] [[31](#ref-31 ""Internet Protocol Transition Workbook""),[62](#ref-62 ""File Transfer Protocol""),JBP]
23 TELNET Telnet [[78](#ref-78 ""Telnet Protocol Specification""),JBP]
25 SMTP Simple Mail Transfer [[31](#ref-31 ""Internet Protocol Transition Workbook""),[68](#ref-68 ""Simple Mail Transfer Protocol""),JBP]
27 NSW User System FE [[18](#ref-18 ""Semi-Annual Technical Report""),RHT]
29 MSG ICP [[54](#ref-54 ""MSG: The Interprocess Communication Facility for the National Software Works""),RHT]
31 MSG Authentication [[54](#ref-54 ""MSG: The Interprocess Communication Facility for the National Software Works""),RHT]
33 Unassigned [JBP]
35 Any Printer Server [JBP]
37 TIME Time [[74](#ref-74 ""Time Protocol""),JBP]
39 RLP Resource Location Protocol [[1](#ref-1 ""Resource Location Protocol""),MA]
41 GRAPHICS Graphics [[32](#ref-32 ""ARPANET Protocol Handbook""),[90](#ref-90 ""A Networks Graphics Protocol""),JBP]
42 NAMESERVER Host Name Server [[31](#ref-31 ""Internet Protocol Transition Workbook""),[65](#ref-65 ""Name Server""),JBP]
43 NICNAME Who Is [[31](#ref-31 ""Internet Protocol Transition Workbook""),[39](#ref-39 ""Nicname/Whois""),JAKE]
44 MPM FLAGS Protocol [JBP]
45 MPM Message Processing Module [recv] [[64](#ref-64 ""Internet Message Protocol""),JBP]
46 MPM MPM [default send] [[64](#ref-64 ""Internet Message Protocol""),JBP]
47 NI FTP [[94](#ref-94 ""A Network Independent File Transfer Protocol""),SK]Reynolds & Postel [Page 13]
Assigned Numbers RFC 900 Port Numbers
49 Login Host Protocol [PXD]
51 IMP Logical Address Maintenance [[50](#ref-50 ""Logical Addressing Implementation Specification""),AGM]
53 DOMAIN Domain Name Server [PM1]
55 ISI Graphics Language [[10](#ref-10 ""Graphics Language (version 2.1)""),RB6]
57 Any Private Terminal Access [JBP]
59 Any Private File Service [JBP]
61 NI MAIL [[8](#ref-8 ""A Simple NIFTP-Based Mail System""),SK]
63 VIA Systems - FTP [DXD]
65 Unassigned [JBP]
67 Unassigned [JBP]
69 TFTP Trivial File Transfer [[31](#ref-31 ""Internet Protocol Transition Workbook""),[87](#ref-87 ""The TFTP Protocol (Revision 2)""),KRS]
71 NETRJS Remote Job Service [[12](#ref-12 ""NETRJS Protocol""),[32](#ref-32 ""ARPANET Protocol Handbook""),RTB]
72 NETRJS Remote Job Service [[12](#ref-12 ""NETRJS Protocol""),[32](#ref-32 ""ARPANET Protocol Handbook""),RTB]
73 NETRJS Remote Job Service [[12](#ref-12 ""NETRJS Protocol""),[32](#ref-32 ""ARPANET Protocol Handbook""),RTB]
74 NETRJS Remote Job Service [[12](#ref-12 ""NETRJS Protocol""),[32](#ref-32 ""ARPANET Protocol Handbook""),RTB]
75 Any Private Dial Out Service [JBP]
77 Any Private RJE Service [JBP]
79 FINGER Finger [[32](#ref-32 ""ARPANET Protocol Handbook""),[37](#ref-37 ""Name/Finger""),KLH]
81 HOSTS2 Name Server [EAK1]
83 MIT ML Device [DPR]
85 MIT ML Device [DPR]
87 Any Private Terminal Link [JBP]
89 SU/MIT Telnet Gateway [MRC]
91 MIT Dover Spooler [EBM]
93 Device Control Protocol [DCT]
95 SUPDUP SUPDUP [[21](#ref-21 ""SUPDUP Protocol""),MRC]
97 Unassigned [JBP]
99 Metagram Relay [GEOF]
101 HOSTNAME NIC Host Name Server [[31](#ref-31 ""Internet Protocol Transition Workbook""),[38](#ref-38 ""Hostnames Server""),JAKE]
103 Unassigned [JBP]
105 CSNET-NS Mailbox Name Nameserver [[88](#ref-88 ""The CSNET Name Server""),MHS1]
107 RTELNET Remote Telnet Service [[67](#ref-67 ""Remote Telnet Service""),JBP]
109 POP Post Office Protocol [JBP]
110-129 Unassigned [JBP]
131 Unassigned [JBP]
132-223 Reserved [JBP]
224-241 Unassigned [JBP]
243 Survey Measurement [[9](#ref-9 ""A Report on the Survey Project""),AV]
245 LINK [[14](#ref-14 ""Inter-Entity Communication -- An Experiment""),RDB2]
247-255 Unassigned [JBP]Reynolds & Postel [Page 14]
Assigned Numbers RFC 900 Autonomous System Numbers
ASSIGNED AUTONOMOUS SYSTEM NUMBERSThe Exterior Gateway Protocol (EGP) [[85](#ref-85 ""STUB""),[84](#ref-84 ""Exterior Gateway Protocol"")] 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 [PXK]
5 Symbolics [CH2]
6 HIS-Multics [BIM,RK1]
7 UK-MOD [RNM1]
8 RICE-AS [PGM]
9 CMU-ROUTER [MA]
10-65534 Unassigned [JBP]
65535 Reserved [JBP]Reynolds & Postel [Page 15]
Assigned Numbers RFC 900 ARPANET Logical Addresses
ASSIGNED ARPANET LOGICAL ADDRESSESThe ARPANET facility for "logical addressing" is described in RFC 878 [[49](#ref-49 ""The ARPANET 1822L Host Access Protocol"")]. A portion of the possible logical addresses are reseved 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 16]
Assigned Numbers RFC 900 ARPANET Link Numbers
ASSIGNED ARPANET LINK NUMBERSThe 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](#ref-7 ""Specifications for the Interconnection of a Host and an IMP"")].
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 [[97](#ref-97 ""Internet Transport Protocols""),LLG]
151 Unassigned [JBP]
152 PARC Universal Protocol [[11](#ref-11 ""PUP: An Internetwork Architecture""),[HGM](#ref-HGM)]
153 TIP Status Reporting [JGH]
154 TIP Accounting [JGH]
155 Internet Protocol [regular] [[31](#ref-31 ""Internet Protocol Transition Workbook""),[71](#ref-71 ""Internet Protocol - DARPA Internet Program Protocol Specification""),JBP]
156-158 Internet Protocol [experimental] [[31](#ref-31 ""Internet Protocol Transition Workbook""),[71](#ref-71 ""Internet Protocol - DARPA Internet Program Protocol Specification""),JBP]
159 Figleaf Link [JBW1]
160-195 Unassigned [JBP]
196-247 Experimental Protocols [JBP]
248-255 Network Maintenance [JGH]Reynolds & Postel [Page 17]
Assigned Numbers RFC 900 IEEE 802 SAP Numbers
IEEE 802 SAP NUMBERS OF INTERESTMany 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.
Assignments:
Service Access Point Description References
-------------------- ----------- ----------
decimal binary
96 01100000 DOD IP [[31](#ref-31 ""Internet Protocol Transition Workbook""),[70](#ref-70 ""User Datagram Protocol""),JBP]Reynolds & Postel [Page 18]
Assigned Numbers RFC 900 Ethernet Numbers
ETHERNET NUMBERS OF INTERESTMany 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.
Assignments:
Ethernet Exp. Ethernet Description References
------------- ------------- ----------- ----------
decimal Hex decimal octal
512 0200 512 1000 XEROX PUP [[1](#ref-1 ""Resource Location Protocol""),[HGM](#ref-HGM)]
1536 0600 1536 3000 XEROX NS IDP [[97](#ref-97 ""Internet Transport Protocols""),LLG]
2048 0800 513 1001 DOD IP [131,71,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 - - Address Res [[55](#ref-55 ""An Ethernet Address Resolution Protocol or Converting Network Protocol Addresses to 48-bit Ethernet Addresses for Transmission on Ethernet Hardware""),DCP1]
2076 081C - - Symbolics Private [DCP1]
32771 8003 - - Cronus VLN [[91](#ref-91 ""The CRONUS Virtual Local Network""),DCT]
32772 8004 - - Cronus Direct [[91](#ref-91 ""The CRONUS Virtual Local Network""),DCT]
32774 8006 - - Nestar [LLG]
36864 9000 - - Loopback [LLG]The standard for transmission of IP datagrams over Ethernets and Experimental Ethernets is specified in RFC 894 [[41](#ref-41 ""A Host Monitoring Protocol"")] and RFC 895 [57] respectively.
Reynolds & Postel [Page 19]
Assigned Numbers RFC 900 Address Resolution Protocol
ASSIGNED ADDRESS RESOLUTION PROTOCOL PARAMETERSThe Address Resolution Protocol (ARP) specified in RFC 826 [[55](#ref-55 ""An Ethernet Address Resolution Protocol or Converting Network Protocol Addresses to 48-bit Ethernet Addresses for Transmission on Ethernet Hardware"")] has several parameters. The assigned values for these parameters are listed here.
Assignments:
Operation Code (op)
1 REQUEST
2 REPLY
Hardware Type (hrd)
1 ETHERNET (10Mb)
2 EXPERIMENTAL ETHERNET (3Mb)
Protocol Type (pro)
Use the same codes as listed in the section called "Ethernet
Numbers of Interest".Reynolds & Postel [Page 20]
Assigned Numbers RFC 900 Public Data Network Numbers
ASSIGNED PUBLIC DATA NETWORK NUMBERSOne 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](#ref-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]
014.000.000.017-014.255.255.254 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 [[47](#ref-47 ""A Standard for the Transmission of IP Datagrams Over Public Data Networks"")].
Reynolds & Postel [Page 21]
Assigned Numbers RFC 900 Telnet Options
ASSIGNED TELNET OPTIONSThe Telnet Protocol has a number of options that may be negotiated. These options are listed here. The "Official Protocols" document [[83](#ref-83 ""Official Protocols"")] provides more detailed information.
Options Name References
0 Binary Transmission [[76](#ref-76 ""Telnet Binary Transmission""),JBP]
1 Echo [[77](#ref-77 ""Telnet Echo Option""),JBP]
2 Reconnection [[5](#ref-5 ""Telnet Reconnection Option""),JBP]
3 Suppress Go Ahead [[80](#ref-80 ""Telnet Suppress Go Ahead Option""),JBP]
4 Approx Message Size Negotiation [[32](#ref-32 ""ARPANET Protocol Handbook""),JBP]
5 Status [[79](#ref-79 ""Telnet Status Option""),JBP]
6 Timing Mark [[81](#ref-81 ""Telnet Timing Mark Option""),JBP]
7 Remote Controlled Trans and Echo [[73](#ref-73 ""Remote Controlled Transmission and Echoing Telnet Option""),JBP]
8 Output Line Width [[3](#ref-3 ""Telnet Output Line Width Option""),JBP]
9 Output Page Size [[4](#ref-4),JBP]
10 Output Carriage-Return Disposition [[22](#ref-22 ""Telnet Output Carriage-Return Disposition Option""),JBP]
11 Output Horizontal Tab Stops [[26](#ref-26 ""Telnet Output Horizontal Tabstops Option""),JBP]
12 Output Horizontal Tab Disposition [[25](#ref-25 ""Telnet Output Horizontal Tab Disposition Option""),JBP]
13 Output Formfeed Disposition [[23](#ref-23 ""Telnet Output Formfeed Disposition Option""),JBP]
14 Output Vertical Tabstops [[28](#ref-28 ""Telnet Output Vertical Tabstops Option""),JBP]
15 Output Vertical Tab Disposition [[27](#ref-27 ""Telnet Output Vertical Tab Disposition Option""),JBP]
16 Output Linefeed Disposition [[24](#ref-24 ""Telnet Output Linefeed Disposition""),JBP]
17 Extended ASCII [[53](#ref-53 ""Telnet Extended ASCII Option""),JBP]
18 Logout [[19](#ref-19 ""Telnet Logout Option""),MRC]
19 Byte Macro [[29](#ref-29 ""Revised Telnet Byte Marco Option""),JBP]
20 Data Entry Terminal [[30](#ref-30 ""Telnet Data Entry Terminal Option""),JBP]
22 SUPDUP [[21](#ref-21 ""SUPDUP Protocol""),[20](#ref-20 ""Telnet SUPDUP Option""),MRC]
22 SUPDUP Output [[36](#ref-36 ""Telnet SUPDUP-OUTPUT Option""),MRC]
23 Send Location [[46](#ref-46 ""Telnet Send-Location Option""),EAK1]
24 Terminal Type [[89](#ref-89 ""Telnet Terminal Type Option""),MHS1]
25 End of Record [[69](#ref-69 ""Telnet End of Record Option""),JBP]
255 Extended-Options-List [[75](#ref-75 ""Telnet Extended Options - List Option""),JBP]Reynolds & Postel [Page 22]
Assigned Numbers RFC 900 Machine Names
OFFICIAL MACHINE NAMESThese are the Official Machine Names as they appear in the NIC Host Table. Their use is described in RFC 810 [[33](#ref-33 ""DoD Internet Host Table Specification"")].
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
Reynolds & Postel [Page 23]
Assigned Numbers RFC 900 Machine Names
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 XEROX-8010
Reynolds & Postel [Page 24]
Assigned Numbers RFC 900 System Names
OFFICIAL SYSTEM NAMESThese are the Official System Names as they appear in the NIC Host Table. Their use is described in RFC 810 [[33](#ref-33 ""DoD Internet Host Table Specification"")].
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 25]
Assigned Numbers RFC 900 Protocol Names
OFFICIAL PROTOCOL AND SERVICE NAMESThese are the Official Protocol Names. Their use is described in greater detail in RFC 810 [[33](#ref-33 ""DoD Internet Host Table Specification"")].
CHARGEN - Character Generator Protocol CLOCK - DCNET Time Server Protocol CSNET-NS - CSNET Mailbox Nameserver Protocol DAYTIME - Daytime Protocol DISCARD - Discard Protocol DOMAIN - Domain Name Server Protocol ECHO - Echo Protocol EGP - Exterior Gateway Protocol FINGER - Finger Protocol FTP - File Transfer Protocol GGP - Gateway Gateway Protocol GRAPHICS - Graphics Protocol HMP - Host Monitoring Protocol HOSTNAME - Hostname Protocol ICMP - Internet Control Message Protocol IGP - Interior Gateway Protocol IP - Internet Protocol MPM - Internet Message Protocol MUX - Multiplexing Protocol NAMESERVER - Host Name Server Protocol NETED - Network Standard Text Editor NETRJS - Remote Job Service NICNAME - Who Is Protocol NVP-II - Network Voice Protocol POP - Post Office Protocol QUOTE - Quote of the Day Protocol RVD - Remote Virtual Disk Protocol RLP - Resource Location Protocol RJE - Remote Job Entry Protocol RTELNET - Remote Telnet Service SMTP - Simple Mail Transfer Protocol ST - Stream Protocol SUPDUP - SUPDUP Protocol TELNET - Telnet Protocol TCP - Transmission Control Protocol TFTP - Trivial File Transfer Protocol TIME - Time Server Protocol UDP - User Datagram Protocol USERS - Active Users Protocol XNET - Cross Net Debugger
Reynolds & Postel [Page 26]
Assigned Numbers RFC 900 Terminal Type Names
OFFICIAL TERMINAL TYPE NAMESThese are the Official Terminal Type Names. Their use is described in RFC 884 [[89](#ref-89 ""Telnet Terminal Type Option"")].
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
Reynolds & Postel [Page 27]
Assigned Numbers RFC 900 Terminal Type Names
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
Reynolds & Postel [Page 28]
Assigned Numbers RFC 900 Terminal Type Names
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
Reynolds & Postel [Page 29]
Assigned Numbers RFC 900 Terminal Type Names
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 900 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, 13-November-1973.
[4] ARPANET Protocol Handbook, "Telnet Output Page Size Option", NIC 20197, 13-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, 22 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, 22 November 1977. Also in [[32](#ref-32 ""ARPANET Protocol Handbook"")].
[13] Bressler, B., "Remote Job Entry Protocol", RFC 407, NIC 12112, 16 October 72. Also in [[32](#ref-32 ""ARPANET Protocol Handbook"")].
[14] Bressler, R., "Inter-Entity Communication -- An Experiment", RFC 441, NIC 13773, 19 January 1973.
Reynolds & Postel [Page 31]
Assigned Numbers RFC 900 Documents
[15] Clark, D., "Revision of DSP Specification", Local Network Note 9, Laboratory for Computer Science, MIT, 17 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, 16 August 1976.
[19] Crispin, Mark, "Telnet Logout Option", Stanford University-AI, RFC 727, 27 April 1977.
[20] Crispin, Mark, "Telnet SUPDUP Option", Stanford University-AI, RFC 736, 31-October-1977.
[21] Crispin, M., "SUPDUP Protocol", RFC 734, NIC 41953, 7 October 1977. Also in [[32](#ref-32 ""ARPANET Protocol Handbook"")].
[22] Crocker, D., "Telnet Output Carriage-Return Disposition Option", RFC 652, 25-October-1974.
[23] Crocker, D., "Telnet Output Formfeed Disposition Option", RFC 655, 25-October-1974.
[24] Crocker, D., "Telnet Output Linefeed Disposition", RFC 658, 25-October-1974.
[25] Crocker, D., "Telnet Output Horizontal Tab Disposition Option", RFC 654, 25-October-1974.
[26] Crocker, D., "Telnet Output Horizontal Tabstops Option", RFC 653, 25-October-1974.
[27] Crocker, D., "Telnet Output Vertical Tab Disposition Option", RFC 657, 25-October-1974.
[28] Crocker, D., "Telnet Output Vertical Tabstops Option", RFC 656, 25-October-1974.
Reynolds & Postel [Page 32]
Assigned Numbers RFC 900 Documents
[29] Crocker, D.H. and R.H. Gumpertz, "Revised Telnet Byte Marco Option", RFC 735, 3-November-1977..
[30] Day, John, "Telnet Data Entry Terminal Option", RFC 732, 13-September-1977.
[31] Feinler, E., "Internet Protocol Transition Workbook", Network Information Center, SRI International, March 1982.
[32] 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.
[33] Feinler, E., K. Harrenstien, and Z. Su, "DoD Internet Host Table Specification", RFC 810, SRI International, 1 March 1982.
[34] Forgie, J., "ST - A Proposed Internet Stream Protocol", IEN 119, M.I.T. Lincoln Laboratory, September 1979.
[35] Forsdick, H., "CFTP", Network Message, Bolt Berenak and Newman, January 1982.
[36] Greenberg, B., "Telnet SUPDUP-OUTPUT Option", RFC 749, MIT-Multics, 26-September-1978.
[37] Harrenstien, K., "Name/Finger", RFC 742, NIC 42758, 30 December 1977. Also in [[32](#ref-32 ""ARPANET Protocol Handbook"")].
[38] Harrenstien, K., V. White, and E. Feinler, "Hostnames Server", RFC 811, SRI International, March 1982.
[39] Harrenstien, K., and V. White, "Nicname/Whois", RFC 812, SRI International, March 1982.
[40] Haverty, J., "XNET Formats for Internet Protocol Version 4", IEN 158, October 1980.
[41] Hinden, Robert M., "A Host Monitoring Protocol", RFC 869, Bolt Berenak and Newman, December 1983.
[42] Hinden, R., A. Sheltzer, "The DARPA Internet Gateway", RFC 823, September 1982.
[43] Honeywell CISL, Internal Document, "AFSDSC Hyperchannel RPQ Project Plan".
[44] Honeywell CISL, Internal Document, "Multics MR11 PFS".
Reynolds & Postel [Page 33]
Assigned Numbers RFC 900 Documents
[45] Hornig, C., "A Standard for the Transmission of IP Datagrams over Ethernet Networks, RFC 894, Symbolics, April 1984.
[46] Killian, E., "Telnet Send-Location Option", RFC 779, April 1981.
[47] Korb, John T., "A Standard for the Transmission of IP Datagrams Over Public Data Networks", RFC 877, Purdue University, September 1983.
[48] Macgregor, W., and D. Tappan, "The CRONUS Virtual Local Network", RFC 824, Bolt Beranek and Newman, 22 August 1982.
[49] Malis, Andrew G. "The ARPANET 1822L Host Access Protocol", RFC 878, BBN Communications Corp., Cambridge, Mass, December 1983.
[50] Malis, A., "Logical Addressing Implementation Specification", BBN Report 5256, pp 31-36, May 1983.
[51] 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.
[52] Mills, D.L., "DCN Local-Network Protocols", RFC 891, December 1983.
[53] Tovar, "Telnet Extended ASCII Option", RFC 698, Stanford University-AI, 23-July-1975.
[54] 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 24 December 1976.
[55] 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.
[56] Postel, J., "Active Users", RFC 866, USC/Information Sciences Institute, May 1983.
[57] Postel, J., "A Standard for the Transmission of IP Datagrams over Experimental Ethernet Networks, RFC 895, USC/Information Sciences Institute, April 1984.
Reynolds & Postel [Page 34]
Assigned Numbers RFC 900 Documents
[58] Postel, J., "Character Generator Protocol", RFC 864, USC/Information Sciences Institute, May 1983.
[59] Postel, J., "Daytime Protocol", RFC 867, USC/Information Sciences Institute, May 1983.
[60] Postel, J., "Discard Protocol", RFC 863, USC/Information Sciences Institute, May 1983.
[61] Postel, J., "Echo Protocol", RFC 862, USC/Information Sciences Institute, May 1983.
[62] Postel, J., "File Transfer Protocol", RFC 765, IEN 149, USC/Information Sciences Institute, June 1980.
[63] Postel, J., "Internet Control Message Protocol - DARPA Internet Program Protocol Specification", RFC 792, USC/Information Sciences Institute, September 1981.
[64] Postel, J., "Internet Message Protocol", RFC 759, IEN 113, USC/Information Sciences Institute, August 1980.
[65] Postel, J., "Name Server", IEN 116, USC/Information Sciences Institute, August 1979.
[66] Postel, J., "Quote of the Day Protocol", RFC 865, USC/Information Sciences Institute, May 1983.
[67] Postel, J., "Remote Telnet Service", RFC 818, USC/Information Sciences Institute, November 1982.
[68] Postel, J., "Simple Mail Transfer Protocol", RFC 821, USC/Information Sciences Institute, August 1982.
[69] Postel, J., "Telnet End of Record Option", RFC 885, USC/Information Sciences Institute, December 1983.
[70] Postel, J., "User Datagram Protocol", RFC 768 USC/Information Sciences Institute, August 1980.
[71] Postel, J., ed., "Internet Protocol - DARPA Internet Program Protocol Specification", RFC 791, USC/Information Sciences Institute, September 1981.
[72] Postel, J., ed., "Transmission Control Protocol - DARPA Internet Program Protocol Specification", RFC 793, USC/Information Sciences Institute, September 1981.
Reynolds & Postel [Page 35]
Assigned Numbers RFC 900 Documents
[73] Postel, J. and D. Crocker, "Remote Controlled Transmission and Echoing Telnet Option", RFC 726, 8-March-1977.
[74] Postel, J., and K. Harrenstien, "Time Protocol", RFC 868, USC/Information Sciences Institute, May 1983.
[75] Postel, J. and J. Reynolds, "Telnet Extended Options - List Option", RFC 861, USC/Information Sciences Institute, May 1983.
[76] Postel, J. and J. Reynolds, "Telnet Binary Transmission", RFC 856, USC/Information Sciences Institute, May 1983.
[77] Postel, J. and J. Reynolds, "Telnet Echo Option", RFC 857, USC/Information Sciences Institute, May 1983.
[78] Postel, J., and J. Reynolds, "Telnet Protocol Specification", RFC 854, USC/Information Sciences Institute, May 1983.
[79] Postel, J. and J. Reynolds, "Telnet Status Option", RFC 859, USC/Information Sciences Institute, May 1983.
[80] Postel, J. and J. Reynolds, "Telnet Suppress Go Ahead Option", RFC 858, USC/Information Sciences Institute, May 1983.
[81] Postel, J. and J. Reynolds, "Telnet Timing Mark Option", RFC 860, USC/Information Sciences Institute, May 1983.
[82] Reed, D., "Protocols for the LCS Network", Local Network Note 3, Laboratory for Computer Science, MIT, 29 November 1976.
[83] Reynolds, J. and J. Postel, "Official Protocols", RFC 901, USC/Information Sciences Institute, June 1984.
[84] Rosen, E., "Exterior Gateway Protocol" RFC 827, Bolt Berenak and Newman, October 1982.
[85] Seamonson, L.J., and E.C. Rosen, "STUB" Exterior Gateway Protocol", RFC 888, BBN Communications Corporation, January 1984.
[86] Skelton, A., S. Holmgren, and D. Wood, "The MITRE Cablenet Project", IEN 96, April 1979.
[87] Sollins, K., "The TFTP Protocol (Revision 2)", RFC 783, MIT/LCS, June 1981.
Reynolds & Postel [Page 36]
Assigned Numbers RFC 900 Documents
[88] Solomon, M., L. Landweber, and D, Neuhengen, "The CSNET Name Server", Computer Networks, v.6, n.3, pp. 161-172, July 1982.
[89] Solomon, M., and E. Wimmers, "Telnet Terminal Type Option", RFC 884, University of Wisconsin, Madison, December 1983.
[90] Sproull, R., and E. Thomas, "A Networks Graphics Protocol", NIC 24308, 16 August 1974. Also in [[33](#ref-33 ""DoD Internet Host Table Specification"")].
[91] Tappan, D.C., "The CRONUS Virtual Local Network", RFC 824, Bolt Beranek and Newman, Inc., 26 August 1982.
[92] "The Ethernet, a Local Area Network: Data Link Layer and Physical Layer Specification", AA-K759B-TK, Digital Equipment Corporation, Maynard, VA.
[93] "The Ethernet - A Local Area Network", Version 1.0, Digital Equipment Corporation, Intel Corporation, Xerox Corporation, September 1980.
[94] The High Level Protocol Group, "A Network Independent File Transfer Protocol", INWG Protocol Note 86, December 1977.
[95] Whelan, D., "The Caltech Computer Science Department Network", 5052:DF:82, Caltech Computer Science Department, 1982.
[96] XEROX, "The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specification", X3T51/80-50, Xerox Corporation, Stamford, CT., October 1980.
[97] XEROX, "Internet Transport Protocols", XSIS 028112, Xerox Corporation, Stamford, Connecticut, December 1981.
Reynolds & Postel [Page 37]
Assigned Numbers RFC 900 People
PEOPLE[AB13] Alison Brown CORNELL alison@Cornell.ARPA [AGM] Andy Malis BBN Malis@BBN-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 [AXC] Albert Cheng UIUC acheng.uiuc@csnet-relay.ARPA [AXG] Atul Garg HP ---none--- [AXG1] Alfred Ganz YALE GANZ@YALE [AY5] Akiharu Yasuda DODIIS dia@PAXRV-NES.ARPA [BG5] Bob Gilligan SRI Gilligan@SRI-KL.ARPA [BIM] Benson I. Margulies Honeywell Margulies@CISL.ARPA [BML] Barry Leiner ARPA Leiner@USC-ISIA.ARPA [BXA] Bobby W. Allen YPG WYMER@OFFICE.ARPA [CAK] Chris Kent PURDUE Kent@PURDUE.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 [CXL] Clifford A. Lynch UCB UCDLA@BBNCCY.ARPA [DAM1] David A. Mosher UCB Mosher@BERKELEY.ARPA [DCP1] David Plummer MIT DCP@MIT-MC.ARPA [DCT] Dan Tappan BBN Tappan@BBNG.ARPA [DDC2] Dave Clark MIT-LCS Clark@MIT-Multics.ARPA [DHH] Doug Hunt BBN DHunt@BBN-Unix.ARPA [DJF] David J. Farber U of Del. Farber@Udel-ee.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--- [DXH] Douglas Hirsch BBN hirsch@bbn-unix.ARPA [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 [GXH] Glenn I. Hastie II SRI Hastie@SRI-SPAM.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
Reynolds & Postel [Page 38]
Assigned Numbers RFC 900 People
[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 [JKR1] Joyce K. Reynolds ISI JKREYNOLDS@USC-ISIF.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 [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 [JXS] Jeffrey R. Schwab PURDUE jrs@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 [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 [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 [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 [MH12] Mark Horton ATT mark@BERKELEY.ARPA [MHS1] Marvin Solomon WISC Solomon@UWISC.ARPA [MJM2] Mike Muuss BRL Mike@BRL.ARPA [MO2] Michael O'Brien RAND OBrien@RAND-Unix.ARPA [MRC] Mark Crispin Stanford Admin.MRC@SU-SCORE.ARPA [MS9] Martin Schoffstall CADMUS decvax!yvax!marty@Berkeley [MXB] Mark Brown USC Mark@USC-ECLB.ARPA [MXF] Martin J. Fouts NASA-Ames nep.fouts@ames-amelia.ARPA
Reynolds & Postel [Page 39]
Assigned Numbers RFC 900 People
[MXP] Michael K. Peterson HUGHES scgvaxd!mkp@cit-vax.ARPA [MXR] Marshall Rose Irvine MRose.UCI@RAND-Relay.ARPA [MXM] Marc M. Meilleur COINS COINS@USC-ISI.ARPA [MXS] Marc Shapiro INRIA Shapiro@CMU-CS-C.ARPA [NC3] J. Noel Chiappa MIT JNC@MIT-XX.ARPA [NXK] Neil Katin HP hpda.neil@BERKELEY.ARPA [PAM6] Paul McNabb RICE pam@PURDUE.ARPA [PG3] Phill Gross LINKABIT gross@dcn7.ARPA [PGM] Paul G. Milazzo RICE Milazzo@RICE.ARPA [PK] Peter Kirstein UCL Kirstein@USC-ISIA.ARPA [PM1] Paul Mockapetris ISI Mockapetris@USC-ISIF.ARPA [PS3] Paal Spilling NDRE Paal@NTA-VAX.ARPA [PXD] Pieter Ditmars BBN pditmars@BBN-UNIX.ARPA [PXK] Paul Kirton ISI Kirton@USC-ISIF.ARPA [PXM] Pat Marques NSRDC marques@dtrc.ARPA [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 [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 [RH6] Robert Hinden BBN Hinden@BBN-Unix.ARPA [RHT] Robert Thomas BBN BThomas@BBNG.ARPA [RK1] Richard Kovalcik Honeywell Kovalcik@MIT-MULTICS.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 [RNM1] Neil MacKenzie RSRE T45@USC-ISID.ARPA [RR2] Raleigh Romine Teledyne romine@SEISMO.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 [RXR] Ron Reisor UDEL ron.udel-cc-relay@udel.ARPA [RXS] Ronald L. Smith COINS COINS@USC-ISIA.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 [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 [TXF] Thomas Ferrin UCSF ucsfcgl!tef@Berkeley.ARPA [TXN] Todd Nugent U Chicago Nugent@ANL-MCS.ARPA
Reynolds & Postel [Page 40]
Assigned Numbers RFC 900 People
[UXB] Ulf Bilting CHALMERS bilting@purdue.ARPA [WIM] William Macgregor BBN macg@BBN.ARPA [WNJ] Bill Joy SMI sun!wnj@BERKELEY.ARPA [ZSU] Zaw-Sing Su SRI ZSu@SRI-TSC.ARPA
Reynolds & Postel [Page 41]
Assigned Numbers RFC 900 Appendix A
APPENDIX ANetwork 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.Reynolds & Postel [Page 42]
Assigned Numbers RFC 900 Appendix A
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.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 43]