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LinuxDig.com Request For Comments

RFC Number : 900

Title : 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' [31] or in the old
'ARPANET Protocol Handbook' [32] prepared by the NIC. Some of the
items listed are undocumented. Further information on protocols can
be found in the memo 'Official Protocols' [83].

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.




Reynolds & Postel [Page 1]



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.




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,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]










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,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]


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,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]


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 [43,44,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]


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,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













Reynolds & 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 2113658























Reynolds & Postel [Page 9]



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]


































Reynolds & Postel [Page 10]



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]


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 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]


Reynolds & Postel [Page 13]



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]










Reynolds & Postel [Page 14]



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]



























Reynolds & Postel [Page 15]



Assigned Numbers RFC 900
ARPANET Logical Addresses


ASSIGNED ARPANET LOGICAL ADDRESSES

The ARPANET facility for 'logical addressing' is described in RFC 878
[49]. 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 NUMBERS

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

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

Link Assignments:

Decimal Description References
------- ----------- ----------
0 Reserved [JBP]
1-149 Unassigned [JBP]
150 Xerox NS IDP [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]

















Reynolds & Postel [Page 17]



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]






































Reynolds & Postel [Page 18]



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 [41] and RFC 895 [57]
respectively.





















Reynolds & Postel [Page 19]



Assigned Numbers RFC 900
Address Resolution Protocol


ASSIGNED ADDRESS RESOLUTION PROTOCOL PARAMETERS

The Address Resolution Protocol (ARP) specified in RFC 826 [55] 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 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 [47].


















Reynolds & Postel [Page 21]



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
[83] 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]















Reynolds & Postel [Page 22]



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 [33].

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 NAMES

These are the Official System Names as they appear in the NIC Host
Table. Their use is described in RFC 810 [33].

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 NAMES

These are the Official Protocol Names. Their use is described in
greater detail in RFC 810 [33].

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 NAMES

These are the Official Terminal Type Names. Their use is described
in RFC 884 [89].

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].

[13] Bressler, B., 'Remote Job Entry Protocol', RFC 407, NIC
12112, 16 October 72. Also in [32].

[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].

[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].

[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].

[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 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.





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]




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