RFC 900 - Assigned Numbers
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 NUMBERS Status 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.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"  or in the old "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" . In all cases the name and mailbox of the responsible individual is indicated. In the lists that follow, a bracketed entry, e.g., [31,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. Assigned Numbers RFC 900 Network Numbers ASSIGNED NETWORK NUMBERS The network numbers listed here are used as internet addresses by the Internet Protocol (IP) [31,71]. 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. 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". 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,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 [7,32,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 [15,82,DDC2] D 023.rrr.rrr.rrr DDN-TC-NET DDN-TestCell-Network [DXH] D 024.rrr.rrr.rrr MINET MINET [7,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] 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,DLM1] R 128.005.rrr.rrr FORDNET FORD DCNET [52,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,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,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 [86,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 [43,44,RK1] R 128.036.rrr.rrr YALE-NET YALE NET [96,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 Net [52,96,PGM] R 128.043.rrr.rrr CRANET CANADA REF ARPANET [7,JR17] 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,KTP] C*128.048.rrr.rrr UCDLA-NET UCDLA MELVYL Network [7,CXL] R 128.049.rrr.rrr NOSC-ETHER NOSC Ethernet [96,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,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,KWP] R 192.005.006.rrr DEC-MRRAD DEC Marlboro Developmt [92,KWP] R 192.005.007.rrr CIT-CS-NET Caltech-CS-Net [95,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 [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,FAS] R 192.005.014.rrr RAND-NET RAND Network [96,JDG] R 192.005.015.rrr NYU-NET NYU Network [EF5] R 192.005.016.rrr LANL-LAND Los Alamos Dev LAN [96,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,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] 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 [43,44,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 [96,RLB1] R 192.005.036.rrr CORNELL-CS CORNELL CS Research [96,DK2] R 192.005.037.rrr UR-CS-NET U of R CS 3Mb Net [51,LB1] R 192.005.038.rrr SRI-C3ETHER SRI-AITAD C3ETHERNET [96,BG5] R 192.005.039.rrr UDEL-EECIS Udel EECIS LAN [93,CC2] R 192.005.040.rrr PUCC-NET-A PURDUE Comp Cntr Net [JXS] D 192.005.041.rrr WISLAN WIS Research LAN [86,JRM1] D 192.005.042.rrr AFDSC-HYPER AFDSC Hypernet [MCSJ] R 192.005.043.rrr CUCSNET Columbia CS Net [96,LH2] R 192.005.044.rrr Farber-PC-Net Farber PC Network [DJF] R 192.005.045.rrr AIDS-NET AI&DS Network [96,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,CAK] R 192.005.049.rrr UCSF Univ of Calif, San Fran [93,TXF] R 192.005.050.rrr CTH-CS-NET Chalmers CSN Local Net [93,UXB] R 192.005.051.rrr Theorynet Cornell Theory Center [96,AB13] R 192.005.052.rrr NLM-ETHER NLM-LHNCBC-ETHERNET [71,JA1] R 192.005.053.rrr UR-CS-ETHER U of R CS 10Mb Net [51,LB1] R 192.005.054.rrr AERO-A6 Aerospace [2,LCN] R 192.005.055.rrr UCLA-CECS UCLA-CECS Network [96,RBW] C 192.005.056.rrr TARTAN-NET Tartan Labs [SXB] R 192.005.057.rrr UDEL-CC UDEL Comp Center [93,RXR] R 192.005.058.rrr CSNET-PDN CSNET X.25 Network [47,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, 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,GXH] R 192.005.068.rrr AERO-130 AEROSPACE-130 [LCN] R 192.005.069.rrr UIUC-NET Univ of IL at Urbana [96,AXC] G 192.005.070.rrr CELAN COINS Exper. LAN [MXM] R 192.005.071.rrr SAC-ETHER SAC C3 Ethernet [96,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,AXG1] R 192.005.089.rrr UTEXAS U. Texas Austin Net [96,JSQ1] 192.005.090.rrr-192.005.255.rrr Unassigned [JBP] 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,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,AMS1] C*192.012.004.rrr SCG-NET Hughes SCG Net [96,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 52 837 902 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 2113658 Assigned Numbers RFC 900 Version Numbers ASSIGNED VERSION NUMBERS In the Internet Protocol (IP) [31,71] 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] Assigned Numbers RFC 900 Protocol Numbers ASSIGNED PROTOCOL NUMBERS In the Internet Protocol (IP) [31,71] 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,JBP] 2 Unassigned [JBP] 3 GGP Gateway-to-Gateway [42,MB] 4 Unassigned [JBP] 5 ST Stream [34,JWF] 6 TCP Transmission Control [31,72,JBP] 7 UCL [PK] 8 EGP Exterior Gateway Protocol [85,DLM1] 9 IGP any private interior gateway [JBP] 10 BBN RCC Monitoring [SGC] 11 NVP-II Network Voice Protocol [16,SC3] 12 PUP [11,HGM] 13 ARGUS [RWS4] 14 Unassigned [JBP] 15 XNET Cross Net Debugger [40,JFH2] 16 Chaos Stream [NC3] 17 UDP User Datagram [31,70,JBP] 18 MUX Multiplexing [17,JBP] 19 DCN Measurement Subsystems [DLM1] 20 HMP Host Monitoring [41,RH6] 21 Packet Radio Measurement [ZSU] 22 XEROX NS IDP [97,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,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] 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] Assigned Numbers RFC 900 Port Numbers ASSIGNED PORT NUMBERS Ports are used in the TCP [31,72] 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 [31,70]. 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 [13,32,JBP] 7 ECHO Echo [61,JBP] 9 DISCARD Discard [60,JBP] 11 USERS Active Users [56,JBP] 13 DAYTIME Daytime [59,JBP] 15 NETSTAT Who is up or NETSTAT [JBP] 17 QUOTE Quote of the Day [66,JBP] 19 CHARGEN Character Generator [58,JBP] 20 FTP File Transfer [Default Data] [31,62,JBP] 21 FTP File Transfer [Control] [31,62,JBP] 23 TELNET Telnet [78,JBP] 25 SMTP Simple Mail Transfer [31,68,JBP] 27 NSW User System FE [18,RHT] 29 MSG ICP [54,RHT] 31 MSG Authentication [54,RHT] 33 Unassigned [JBP] 35 Any Printer Server [JBP] 37 TIME Time [74,JBP] 39 RLP Resource Location Protocol [1,MA] 41 GRAPHICS Graphics [32,90,JBP] 42 NAMESERVER Host Name Server [31,65,JBP] 43 NICNAME Who Is [31,39,JAKE] 44 MPM FLAGS Protocol [JBP] 45 MPM Message Processing Module [recv] [64,JBP] 46 MPM MPM [default send] [64,JBP] 47 NI FTP [94,SK] Assigned Numbers RFC 900 Port Numbers 49 Login Host Protocol [PXD] 51 IMP Logical Address Maintenance [50,AGM] 53 DOMAIN Domain Name Server [PM1] 55 ISI Graphics Language [10,RB6] 57 Any Private Terminal Access [JBP] 59 Any Private File Service [JBP] 61 NI MAIL [8,SK] 63 VIA Systems - FTP [DXD] 65 Unassigned [JBP] 67 Unassigned [JBP] 69 TFTP Trivial File Transfer [31,87,KRS] 71 NETRJS Remote Job Service [12,32,RTB] 72 NETRJS Remote Job Service [12,32,RTB] 73 NETRJS Remote Job Service [12,32,RTB] 74 NETRJS Remote Job Service [12,32,RTB] 75 Any Private Dial Out Service [JBP] 77 Any Private RJE Service [JBP] 79 FINGER Finger [32,37,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,MRC] 97 Unassigned [JBP] 99 Metagram Relay [GEOF] 101 HOSTNAME NIC Host Name Server [31,38,JAKE] 103 Unassigned [JBP] 105 CSNET-NS Mailbox Name Nameserver [88,MHS1] 107 RTELNET Remote Telnet Service [67,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,AV] 245 LINK [14,RDB2] 247-255 Unassigned [JBP] Assigned Numbers RFC 900 Autonomous System Numbers ASSIGNED AUTONOMOUS SYSTEM NUMBERS The Exterior Gateway Protocol (EGP) [85,84] 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] Assigned Numbers RFC 900 ARPANET Logical Addresses ASSIGNED ARPANET LOGICAL ADDRESSES The ARPANET facility for "logical addressing" is described in RFC 878 . 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] Assigned Numbers RFC 900 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 . 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,LLG] 151 Unassigned [JBP] 152 PARC Universal Protocol [11,HGM] 153 TIP Status Reporting [JGH] 154 TIP Accounting [JGH] 155 Internet Protocol [regular] [31,71,JBP] 156-158 Internet Protocol [experimental] [31,71,JBP] 159 Figleaf Link [JBW1] 160-195 Unassigned [JBP] 196-247 Experimental Protocols [JBP] 248-255 Network Maintenance [JGH] Assigned Numbers RFC 900 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. Assignments: Service Access Point Description References -------------------- ----------- ---------- decimal binary 96 01100000 DOD IP [31,70,JBP] Assigned Numbers RFC 900 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. 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 [97,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,DCP1] 2076 081C - - Symbolics Private [DCP1] 32771 8003 - - Cronus VLN [91,DCT] 32772 8004 - - Cronus Direct [91,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  and RFC 895  respectively. Assigned Numbers RFC 900 Address Resolution Protocol ASSIGNED ADDRESS RESOLUTION PROTOCOL PARAMETERS The Address Resolution Protocol (ARP) specified in RFC 826  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". Assigned Numbers RFC 900 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] 014.000.000.017-014.255.255.254 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 . Assigned Numbers RFC 900 Telnet Options ASSIGNED TELNET OPTIONS The Telnet Protocol has a number of options that may be negotiated. These options are listed here. The "Official Protocols" document  provides more detailed information. Options Name References ------- ----------------------- ---------- 0 Binary Transmission [76,JBP] 1 Echo [77,JBP] 2 Reconnection [5,JBP] 3 Suppress Go Ahead [80,JBP] 4 Approx Message Size Negotiation [32,JBP] 5 Status [79,JBP] 6 Timing Mark [81,JBP] 7 Remote Controlled Trans and Echo [73,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 [53,JBP] 18 Logout [19,MRC] 19 Byte Macro [29,JBP] 20 Data Entry Terminal [30,JBP] 22 SUPDUP [21,20,MRC] 22 SUPDUP Output [36,MRC] 23 Send Location [46,EAK1] 24 Terminal Type [89,MHS1] 25 End of Record [69,JBP] 255 Extended-Options-List [75,JBP] Assigned Numbers RFC 900 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 . 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 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 Assigned Numbers RFC 900 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 . 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 Assigned Numbers RFC 900 Protocol Names OFFICIAL PROTOCOL AND SERVICE NAMES These are the Official Protocol Names. Their use is described in greater detail in RFC 810 . 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 Assigned Numbers RFC 900 Terminal Type Names OFFICIAL TERMINAL TYPE NAMES These are the Official Terminal Type Names. Their use is described in RFC 884 . 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 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 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 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 Assigned Numbers RFC 900 Documents DOCUMENTS  Accetta, Mike, "Resource Location Protocol", RFC 887, Carnegie-Mellon University, December 1983.  Aerospace, Internal Report, ATM-83(3920-01)-3, 1982.  ARPANET Protocol Handbook, "Telnet Output Line Width Option", NIC 20196, 13-November-1973.  ARPANET Protocol Handbook, "Telnet Output Page Size Option", NIC 20197, 13-November-1973.  ARPANET Protocol Handbook, "Telnet Reconnection Option", NIC 15391, August 1973.  BBN Proposal No. P83-COM-40, "Packet Switched Overlay to Tactical Multichannel/Satellite Systems".  BBN, "Specifications for the Interconnection of a Host and an IMP", Report 1822, Bolt Beranek and Newman, Cambridge, Massachusetts, revised, December 1981.  Bennett, C., "A Simple NIFTP-Based Mail System", IEN 169, University College, London, January 1981.  Bhushan, A., "A Report on the Survey Project", RFC 530, NIC 17375, 22 June 1973.  Bisbey, R., D. Hollingworth, and B. Britt, "Graphics Language (version 2.1)", ISI/TM-80-18, USC/Information Sciences Institute, July 1980.  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.  Braden, R., "NETRJS Protocol", RFC 740, NIC 42423, 22 November 1977. Also in .  Bressler, B., "Remote Job Entry Protocol", RFC 407, NIC 12112, 16 October 72. Also in .  Bressler, R., "Inter-Entity Communication -- An Experiment", RFC 441, NIC 13773, 19 January 1973. Assigned Numbers RFC 900 Documents  Clark, D., "Revision of DSP Specification", Local Network Note 9, Laboratory for Computer Science, MIT, 17 June 1977.  Cohen, D., "Specifications for the Network Voice Protocol", RFC 741, ISI/RR 7539, USC/Information Sciences Institute, March 1976.  Cohen, D. and J. Postel, "Multiplexing Protocol", IEN 90, USC/Information Sciences Institute, May 1979.  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.  Crispin, Mark, "Telnet Logout Option", Stanford University-AI, RFC 727, 27 April 1977.  Crispin, Mark, "Telnet SUPDUP Option", Stanford University-AI, RFC 736, 31-October-1977.  Crispin, M., "SUPDUP Protocol", RFC 734, NIC 41953, 7 October 1977. Also in .  Crocker, D., "Telnet Output Carriage-Return Disposition Option", RFC 652, 25-October-1974.  Crocker, D., "Telnet Output Formfeed Disposition Option", RFC 655, 25-October-1974.  Crocker, D., "Telnet Output Linefeed Disposition", RFC 658, 25-October-1974.  Crocker, D., "Telnet Output Horizontal Tab Disposition Option", RFC 654, 25-October-1974.  Crocker, D., "Telnet Output Horizontal Tabstops Option", RFC 653, 25-October-1974.  Crocker, D., "Telnet Output Vertical Tab Disposition Option", RFC 657, 25-October-1974.  Crocker, D., "Telnet Output Vertical Tabstops Option", RFC 656, 25-October-1974. Assigned Numbers RFC 900 Documents  Crocker, D.H. and R.H. Gumpertz, "Revised Telnet Byte Marco Option", RFC 735, 3-November-1977..  Day, John, "Telnet Data Entry Terminal Option", RFC 732, 13-September-1977.  Feinler, E., "Internet Protocol Transition Workbook", Network Information Center, SRI International, March 1982.  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.  Feinler, E., K. Harrenstien, and Z. Su, "DoD Internet Host Table Specification", RFC 810, SRI International, 1 March 1982.  Forgie, J., "ST - A Proposed Internet Stream Protocol", IEN 119, M.I.T. Lincoln Laboratory, September 1979.  Forsdick, H., "CFTP", Network Message, Bolt Berenak and Newman, January 1982.  Greenberg, B., "Telnet SUPDUP-OUTPUT Option", RFC 749, MIT-Multics, 26-September-1978.  Harrenstien, K., "Name/Finger", RFC 742, NIC 42758, 30 December 1977. Also in .  Harrenstien, K., V. White, and E. Feinler, "Hostnames Server", RFC 811, SRI International, March 1982.  Harrenstien, K., and V. White, "Nicname/Whois", RFC 812, SRI International, March 1982.  Haverty, J., "XNET Formats for Internet Protocol Version 4", IEN 158, October 1980.  Hinden, Robert M., "A Host Monitoring Protocol", RFC 869, Bolt Berenak and Newman, December 1983.  Hinden, R., A. Sheltzer, "The DARPA Internet Gateway", RFC 823, September 1982.  Honeywell CISL, Internal Document, "AFSDSC Hyperchannel RPQ Project Plan".  Honeywell CISL, Internal Document, "Multics MR11 PFS". Assigned Numbers RFC 900 Documents  Hornig, C., "A Standard for the Transmission of IP Datagrams over Ethernet Networks, RFC 894, Symbolics, April 1984.  Killian, E., "Telnet Send-Location Option", RFC 779, April 1981.  Korb, John T., "A Standard for the Transmission of IP Datagrams Over Public Data Networks", RFC 877, Purdue University, September 1983.  Macgregor, W., and D. Tappan, "The CRONUS Virtual Local Network", RFC 824, Bolt Beranek and Newman, 22 August 1982.  Malis, Andrew G. "The ARPANET 1822L Host Access Protocol", RFC 878, BBN Communications Corp., Cambridge, Mass, December 1983.  Malis, A., "Logical Addressing Implementation Specification", BBN Report 5256, pp 31-36, May 1983.  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.  Mills, D.L., "DCN Local-Network Protocols", RFC 891, December 1983.  Tovar, "Telnet Extended ASCII Option", RFC 698, Stanford University-AI, 23-July-1975.  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.  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.  Postel, J., "Active Users", RFC 866, USC/Information Sciences Institute, May 1983.  Postel, J., "A Standard for the Transmission of IP Datagrams over Experimental Ethernet Networks, RFC 895, USC/Information Sciences Institute, April 1984. Assigned Numbers RFC 900 Documents  Postel, J., "Character Generator Protocol", RFC 864, USC/Information Sciences Institute, May 1983.  Postel, J., "Daytime Protocol", RFC 867, USC/Information Sciences Institute, May 1983.  Postel, J., "Discard Protocol", RFC 863, USC/Information Sciences Institute, May 1983.  Postel, J., "Echo Protocol", RFC 862, USC/Information Sciences Institute, May 1983.  Postel, J., "File Transfer Protocol", RFC 765, IEN 149, USC/Information Sciences Institute, June 1980.  Postel, J., "Internet Control Message Protocol - DARPA Internet Program Protocol Specification", RFC 792, USC/Information Sciences Institute, September 1981.  Postel, J., "Internet Message Protocol", RFC 759, IEN 113, USC/Information Sciences Institute, August 1980.  Postel, J., "Name Server", IEN 116, USC/Information Sciences Institute, August 1979.  Postel, J., "Quote of the Day Protocol", RFC 865, USC/Information Sciences Institute, May 1983.  Postel, J., "Remote Telnet Service", RFC 818, USC/Information Sciences Institute, November 1982.  Postel, J., "Simple Mail Transfer Protocol", RFC 821, USC/Information Sciences Institute, August 1982.  Postel, J., "Telnet End of Record Option", RFC 885, USC/Information Sciences Institute, December 1983.  Postel, J., "User Datagram Protocol", RFC 768 USC/Information Sciences Institute, August 1980.  Postel, J., ed., "Internet Protocol - DARPA Internet Program Protocol Specification", RFC 791, USC/Information Sciences Institute, September 1981.  Postel, J., ed., "Transmission Control Protocol - DARPA Internet Program Protocol Specification", RFC 793, USC/Information Sciences Institute, September 1981. Assigned Numbers RFC 900 Documents  Postel, J. and D. Crocker, "Remote Controlled Transmission and Echoing Telnet Option", RFC 726, 8-March-1977.  Postel, J., and K. Harrenstien, "Time Protocol", RFC 868, USC/Information Sciences Institute, May 1983.  Postel, J. and J. Reynolds, "Telnet Extended Options - List Option", RFC 861, USC/Information Sciences Institute, May 1983.  Postel, J. and J. Reynolds, "Telnet Binary Transmission", RFC 856, USC/Information Sciences Institute, May 1983.  Postel, J. and J. Reynolds, "Telnet Echo Option", RFC 857, USC/Information Sciences Institute, May 1983.  Postel, J., and J. Reynolds, "Telnet Protocol Specification", RFC 854, USC/Information Sciences Institute, May 1983.  Postel, J. and J. Reynolds, "Telnet Status Option", RFC 859, USC/Information Sciences Institute, May 1983.  Postel, J. and J. Reynolds, "Telnet Suppress Go Ahead Option", RFC 858, USC/Information Sciences Institute, May 1983.  Postel, J. and J. Reynolds, "Telnet Timing Mark Option", RFC 860, USC/Information Sciences Institute, May 1983.  Reed, D., "Protocols for the LCS Network", Local Network Note 3, Laboratory for Computer Science, MIT, 29 November 1976.  Reynolds, J. and J. Postel, "Official Protocols", RFC 901, USC/Information Sciences Institute, June 1984.  Rosen, E., "Exterior Gateway Protocol" RFC 827, Bolt Berenak and Newman, October 1982.  Seamonson, L.J., and E.C. Rosen, "STUB" Exterior Gateway Protocol", RFC 888, BBN Communications Corporation, January 1984.  Skelton, A., S. Holmgren, and D. Wood, "The MITRE Cablenet Project", IEN 96, April 1979.  Sollins, K., "The TFTP Protocol (Revision 2)", RFC 783, MIT/LCS, June 1981. Assigned Numbers RFC 900 Documents  Solomon, M., L. Landweber, and D, Neuhengen, "The CSNET Name Server", Computer Networks, v.6, n.3, pp. 161-172, July 1982.  Solomon, M., and E. Wimmers, "Telnet Terminal Type Option", RFC 884, University of Wisconsin, Madison, December 1983.  Sproull, R., and E. Thomas, "A Networks Graphics Protocol", NIC 24308, 16 August 1974. Also in .  Tappan, D.C., "The CRONUS Virtual Local Network", RFC 824, Bolt Beranek and Newman, Inc., 26 August 1982.  "The Ethernet, a Local Area Network: Data Link Layer and Physical Layer Specification", AA-K759B-TK, Digital Equipment Corporation, Maynard, VA.  "The Ethernet - A Local Area Network", Version 1.0, Digital Equipment Corporation, Intel Corporation, Xerox Corporation, September 1980.  The High Level Protocol Group, "A Network Independent File Transfer Protocol", INWG Protocol Note 86, December 1977.  Whelan, D., "The Caltech Computer Science Department Network", 5052:DF:82, Caltech Computer Science Department, 1982.  XEROX, "The Ethernet, A Local Area Network: Data Link Layer and Physical Layer Specification", X3T51/80-50, Xerox Corporation, Stamford, CT., October 1980.  XEROX, "Internet Transport Protocols", XSIS 028112, Xerox Corporation, Stamford, Connecticut, December 1981. 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 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 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 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 Assigned Numbers RFC 900 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. 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.