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Obsoletes:
Obsoleted by:
Network Working Group J. Reynolds
Request for Comments: 870 J. Postel
ISI
Obsoletes RFCs: 820, October 1983
790, 776, 770, 762, 758, 755,
750, 739, 604, 503, 433, 349
Obsoletes IENs: 127, 117, 93
ASSIGNED NUMBERS
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, or network number please contact Joyce to receive a number
assignment.
Joyce Reynolds
USC - Information Sciences Institute
4676 Admiralty Way
Marina del Rey, California 90292
phone: (213) 822-1511
ARPA mail: JKREYNOLDS@USC-ISIF
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" [16] or in the old "ARPANET
Protocol Handbook" [17] prepared by the NIC. Some of the items listed
are undocumented. Further information on protocols can be found in the
memo "Official Protocols" [52].
In all cases the name and mailbox of the responsible individual is
indicated. In the lists that follow, a bracketed entry, e.g., [16,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.
Reynolds & Postel [Page 1]
Assigned Numbers RFC 870
Network Numbers
ASSIGNED NETWORK NUMBERS
The network numbers listed here are used as internet addresses by the
Internet Protocol (IP) [16,47]. 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 870
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 ISIF 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 three catagories of users of Internet Addresses: Research,
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 (in the column marked by an asterisk):
R for Research and Development, D for DoD, and C for Commercial.
Numbers assigned for commercial use of IP family protocols, but not
for interworking with the ARPA or DoD Internets are marked with an
astrisk preceeding the number.
For various reasons, the assigned numbers of networks are sometimes
changed. To ease the transition the old number will be listed 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 the
suffixed "-TEMP".
Reynolds & Postel [Page 3]
Assigned Numbers RFC 870
Network Numbers
Assigned Network Numbers
Class A Networks
* Internet Address Name Network References
- ---------------- ---- ------- ----------
000.rrr.rrr.rrr Reserved [JBP]
R 003.rrr.rrr.rrr T RCC-NET-TEMP BBN RCC Network [SGC]
R 004.rrr.rrr.rrr SATNET Atlantic Satellite Network[DM11]
D 005.rrr.rrr.rrr T DEMO-PR-1-TEMPDemo-1 Packet Radio Network[LCS]
D 006.rrr.rrr.rrr T YPG-NET-TEMP Yuma Proving Grounds [2,BXA]
D 007.rrr.rrr.rrr T EDN-TEMP DCEC EDN [EC5]
R 008.rrr.rrr.rrr T BBN-NET-TEMP BBN Network [JSG5]
D 009.rrr.rrr.rrr T BRAGG-PR-TEMP Ft. Bragg Packet Radio Net [JEM]
R 010.rrr.rrr.rrr ARPANET ARPANET [2,17,REK2]
C 012.rrr.rrr.rrr ATT ATT, Bell Labs [MH12]
C 014.rrr.rrr.rrr PDN Public Data Network [REK2]
R 018.rrr.rrr.rrr T MIT-TEMP MIT Network [11,51,DDC2]
R 023.rrr.rrr.rrr MITRE MITRE Cablenet [54,APS]
D 024.rrr.rrr.rrr MINET MINET [2,DHH]
R 025.rrr.rrr.rrr RSRE-EXP RSRE Experimental [NM]
D 026.rrr.rrr.rrr MILNET MILNET [HH6]
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 035.rrr.rrr.rrr T RSRE-NULL-TEMPRSRE Null Network [NM]
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]
R 045.rrr.rrr.rrr T C3-PR-TEMP Testbed Development PRNET [BG5]
R 046.rrr.rrr.rrr T Berkeley-TEMP Berkeley Ethernet [DAM1]
R 047.rrr.rrr.rrr T SAC-PR-TEMP SAC Packet Radio Network [BG5]
R 048.rrr.rrr.rrr NDRE-TIU NDRE-TIU [PS3]
R 050.rrr.rrr.rrr NTA-RING NDRE-RING [PS3]
001.rrr.rrr.rrr-002.rrr.rrr.rrr Unassigned [JBP]
011.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-034.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]
049.rrr.rrr.rrr Unassigned [JBP]
051.rrr.rrr.rrr-126.rrr.rrr.rrr Unassigned [JBP]
127.rrr.rrr.rrr Reserved [JBP]
Reynolds & Postel [Page 4]
Assigned Numbers RFC 870
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 [MO1]<--***
R 128.004.rrr.rrr DCNET LINKABIT DCNET [DLM1]
R 128.005.rrr.rrr FORDNET FORD DCNET [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 [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 [29,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 [2,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]
128.029.rrr.rrr Unassigned [JBP]
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 [25,26,RK1]
R 128.036.rrr.rrr YALE-NET YALE NET [61,JO5]
D 128.037.rrr.rrr YPG-NET Yuma Proving Grounds [2,BXA]
D 128.038.rrr.rrr NSWC-NET NSWC Local Host Net [RLH2]
128.039.rrr.rrr-191.254.rrr.rrr Unassigned [JBP]
191.255.rrr.rrr Reserved [JBP]
Reynolds & Postel [Page 5]
Assigned Numbers RFC 870
Network Numbers
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-192.004.255.rrr BBN local networks [SGC]
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]
192.005.005.rrr Unassigned [JBP]
192.005.006.rrr Unassigned [JBP]
R 192.005.007.rrr CIT-CS-NET Caltech-CS-Net [60,DSW]
R 192.005.008.rrr WASHINGTON University of Washington [JAR4]
R 192.005.009.rrr AERONET Aerospace Labnet [1,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 [61,FAS]
R 192.005.014.rrr RAND-NET RAND Network [61,JDG]
R 192.005.015.rrr NYU-NET NYU Network [EF5]
R 192.005.016.rrr LANL-LAND Los Alamos Dev LAN [61,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 [2,MJM2]
D 192.005.022.rrr BRLNET2 BRLNET2 [2,MJM2]
D 192.005.023.rrr BRLNET3 BRLNET3 [2,MJM2]
D 192.005.024.rrr BRLNET4 BRLNET4 [2,MJM2]
D 192.005.025.rrr BRLNET5 BRLNET5 [2,MJM2]
D 192.005.026.rrr NSRDCOA-NET NSRDC Office Auto Net [TC4]
D 192.005.027.rrr DTNSRDC-NET DTNSRDC-NET [TC4]
R 192.005.028.rrr RSRE-NULL RSRE-NULL [NM]
R 192.005.029.rrr RSRE-ACC RSRE-ACC [NM]
R 192.005.030.rrr RSRE-PR RSRE-PR [NM]
R 192.005.031.rrr SIEMENS-NET Siemens Research Network [PXN]
R 192.005.032.rrr CISLTESTNET2 Honeywell [25,26,RK1]
R 192.005.033.rrr CISLTESTNET3 Honeywell [25,26,RK1]
R 192.005.034.rrr CISLTESTNET4 Honeywell [25,26,RK1]
R 192.005.035.rrr RIACS USRA [61,RLB1]
R 192.005.036.rrr CORNELL-CS CORNELL CS Research [61,DK2]
R 192.005.037.rrr UR-CS-NET U of R CS 3Mb Net [31,LB1]
R 192.005.038.rrr SRI-C3ETHER SRI-AITAD C3ETHERNET [61,BG5]
R 192.005.039.rrr UDEL-EECIS Udel EECIS LAN [58,CC2]
R 192.005.040.rrr PUCC-NET-A PURDUE Comp Cntr Net [JXS]
Reynolds & Postel [Page 6]
Assigned Numbers RFC 870
Network Numbers
D 192.005.041.rrr WISLAN WIS Research LAN [54,JRM1]
D 192.005.042.rrr AFDSC-HYPER AFDSC Hypernet [MCSJ]
R 192.005.043.rrr CUCSNET Columbia CS Net [61,LH2]
192.005.044.rrr-192.005.255.rrr Unassigned [JBP]
C*192.006.000.rrr-192.006.255.rrr Hewlett Packard [AXG]
C*192.007.000.rrr-192.007.255.rrr Computer Consoles, Inc. [RA11]
C*192.008.000.rrr-192.008.255.rrr Spartacus Computers, Inc. [SXM]
192.009.000.rrr-223.255.254.rrr Unassigned [JBP]
223.255.255.rrr Reserved [JBP]
Other Reserved Internet Addresses
* Internet Address Name Network References
- ---------------- ---- ------- ----------
224.000.000.000-255.255.255.255 Reserved [JBP]
Reynolds & Postel [Page 7]
Assigned Numbers RFC 870
Network Numbers
Network Totals
Assigned for the Internet
Class A B C Total
Research 10 27 1055 1092
Defense 2 10 9 21
Commercial 2 0 2 4
Total 14 37 1066 1117
Allocated for Internet and Other Uses
Class A B C Total
Research 10 27 1055 1092
Defense 2 10 9 21
Commercial 2 0 770 772
Total 14 37 1834 1885
Maximum Allowed
Class A B C Total
Research 8 1024 65536 66568
Defense 24 3072 458752 461848
Commercial 94 12286 1572862 1585242
Total 126 16382 2097150 2113658
Reynolds & Postel [Page 8]
Assigned Numbers RFC 870
Internet Version Numbers
ASSIGNED INTERNET VERSION NUMBERS
In the Internet Protocol (IP) [16,47] 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 Octal Version References
------- ----- ------- ----------
0 0 Reserved [JBP]
1-3 1-3 Unassigned [JBP]
4 4 Internet Protocol [16,47,JBP]
5 5 ST Datagram Mode [18,JWF]
6-14 6-16 Unassigned [JBP]
15 17 Reserved [JBP]
ASSIGNED INTERNET PROTOCOL NUMBERS
In the Internet Protocol (IP) [16,47] there is a field, called
Protocol, to identify the the next level protocol. This is an 8 bit
field.
Assigned Internet Protocol Numbers
Decimal Octal Protocol References
------- ----- ---------------- ----------
0 0 Reserved [JBP]
1 1 ICMP [16,40,JBP]
2 2 Unassigned [JBP]
3 3 Gateway-to-Gateway [24,MB]
4 4 Unassigned [JBP]
5 5 Stream (ST) [18,JWF]
6 6 Transmission Control (TCP) [16,48,JBP]
7 7 UCL [PK]
8 10 Exterior Gateway Protocol (EGP) [53,RH6]
9 11 Unassigned [JBP]
10 12 BBN RCC Monitoring [SGC]
11 13 NVP [12,SC3]
12 14 PUP [6,EAT3]
13-14 15-16 Unassigned [JBP]
15 17 Cross Net Debugger (XNET) [23,JFH2]
16 20 Chaos Stream [NC3]
17 21 User Datagram (UDP) [16,46,JBP]
18 22 Multiplexing [13,JBP]
19 23 DCN Measurement Subsystems [DLM1]
20 24 Host Monitoring (HMP) [28,RH6]
21 25 Packet Radio Measurement [ZSU]
Reynolds & Postel [Page 9]
Assigned Numbers RFC 870
Internet Protocol Numbers
22 26 XEROX NS IDP [62,LLG]
23 27 Trunk-1 [BML]
24 30 Trunk-2 [BML]
25 31 Leaf-1 [BML]
26 32 Leaf-2 [BML]
27-60 33-74 Unassigned [JBP]
61 75 any host internal protocol [JBP]
62 76 CFTP [19,HCF2]
63 77 any local network [JBP]
64 100 SATNET and Backroom EXPAK [DM11]
65 101 MIT Subnet Support [NC3]
66 102 MIT VAX Remote Disk Protocol [MBG]
67 103 Internet Pluribus Packet Core [DM11]
68 104 Unassigned [JBP]
69 105 SATNET Monitoring [DM11]
70 106 Unassigned [JBP]
71 107 Internet Packet Core Utility [DM11]
72-75 110-113 Unassigned [JBP]
76 114 Backroom SATNET Monitoring [DM11]
77 115 Unassigned [JBP]
78 116 WIDEBAND Monitoring [DM11]
79 117 WIDEBAND EXPAK [DM11]
80-254 120-376 Unassigned [JBP]
255 377 Reserved [JBP]
Reynolds & Postel [Page 10]
Assigned Numbers RFC 870
Port Numbers
ASSIGNED PORT NUMBERS
Ports are used in the TCP [16,48] 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 [16,46].
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 Octal Description References
------- ----- ----------- ----------
0 0 Reserved [JBP]
1-4 1-4 Unassigned [JBP]
5 5 Remote Job Entry [8,17,JBP]
7 7 Echo [38,JBP]
9 11 Discard [37,JBP]
11 13 Active Users [34,JBP]
13 15 Daytime [36,JBP]
15 17 Who is up or NETSTAT [JBP]
17 21 Quote of the Day [43,JBP]
19 23 Character Generator [35,JBP]
20 24 File Transfer (Default Data) [16,39,JBP]
21 25 File Transfer (Control) [16,39,JBP]
23 27 Telnet [50,JBP]
25 31 SMTP [16,45,JBP]
27 33 NSW User System FE [14,RHT]
29 35 MSG ICP [32,RHT]
31 37 MSG Authentication [32,RHT]
33 41 Unassigned [JBP]
35 43 Any Printer Server [JBP]
37 45 Time [49,JBP]
39 47 Unassigned [JBP]
41 51 Graphics [17,57,JBP]
42 52 Host Name Server [16,42,JBP]
43 53 NICNAME (WhoIs) [16,22,JAKE]
44 54 MPM FLAGS Protocol [JBP]
45 55 Message Processing Module (receive) [41,JBP]
46 56 MPM (default send) [41,JBP]
47 57 NI FTP [59,SK]
Reynolds & Postel [Page 11]
Assigned Numbers RFC 870
Port Numbers
49 61 Login Host Protocol [PXD]
51 63 IMP Logical Address Maintenance [30,AGM]
53 65 Domain Name Server [PM1]
55 67 ISI Graphics Language [5,RB6]
57 71 Any Private Terminal Access [JBP]
59 73 Any Private File Service [JBP]
61 75 NIMAIL [3,SK]
63 77 Unassigned [JBP]
65 101 Unassigned [JBP]
67 103 Datacomputer at CCA [10,JZS]
69 105 Trivial File Transfer [16,55,KRS]
71 107 NETRJS [7,17,RTB]
72 110 NETRJS [7,17,RTB]
73 111 NETRJS [7,17,RTB]
74 112 NETRJS [7,17,RTB]
75 113 Any Private Dial Out Service [JBP]
77 115 Any Private RJE Service [JBP]
79 117 Finger (Name) [17,20,KLH]
81 121 HOSTS2 Name Server [EAK1]
83 123 MIT ML Device [DPR]
85 125 MIT ML Device [DPR]
87 127 any terminal link [JBP]
89 131 SU/MIT Telnet Gateway [MRC]
91 133 MIT Dover Spooler [EBM]
93 135 Device Control Protocol [DCT]
95 137 SUPDUP [15,MRC]
97 141 Datacomputer Status [10,JZS]
99 143 Metagram Relay [GEOF]
101 145 NIC Host Name Server [16,21,JAKE]
103 147 Unassigned [JBP]
105 151 CSNET Mailbox Name Server (Program) [56,MHS1]
107 153 Remote Telnet Service [44,JBP]
109-129 155-201 Unassigned [JBP]
131 203 Datacomputer [10,JZS]
132-223 204-337 Reserved [JBP]
224-241 340-361 Unassigned [JBP]
243 363 Survey Measurement [4,AV]
245 365 LINK [9,RDB2]
247-255 367-377 Unassigned [JBP]
Reynolds & Postel [Page 12]
Assigned Numbers RFC 870
Autonomous System Numbers
ASSIGNED AUTONOMOUS SYSTEM NUMBERS
The Exterior Gateway Protocol (EGP) [53] 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 Description References
------- ----------- ----------
0 Reserved [JBP]
1 The BBN Gateways [MB]
2 The DCN Gateways [DLM1]
3 The MIT Gateways [LM8]
4-65534 Unassigned [JBP]
65535 Reserved [JBP]
Reynolds & Postel [Page 13]
Assigned Numbers RFC 870
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 low order
4 bits of the message-id field are to be zero unless explicitly
specified otherwise for the particular protocol used on that link.
The Host/IMP interface is defined in BBN Report 1822 [2].
Link Assignments:
Decimal Octal Description References
------- ----- ----------- ----------
0 0 Reserved [JBP]
1-149 1-225 Unassigned [JBP]
150 226 Xerox NS IP [62,LLG]
151 227 Unassigned [JBP]
152 230 PARC Universal Protocol [6,EAT3]
153 231 TIP Status Reporting [JGH]
154 232 TIP Accounting [JGH]
155 233 Internet Protocol (regular) [16,47,JBP]
156-158 234-236 Internet Protocol (experimental) [16,47,JBP]
159-195 237-303 Unassigned [JBP]
196-255 304-377 Experimental Protocols [JBP]
248-255 370-377 Network Maintenance [JGH]
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 02,00 512 1000 XEROX PUP [6,EAT3]
1536 06,00 1536 3000 XEROX NS IDP [62,LLG]
2048 08,00 513 1001 DOD IP [16,47,JBP]
2054 08,06 - - Address Res [33,DCP1]
Reynolds & Postel [Page 14]
Assigned Numbers RFC 870
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]
014.000.000.011-014.255.255.254 Unassigned [JBP]
014.255.255.255 Reserved [JBP]
The standard for transmission of IP datagrams over the Public Data
Network is specified in [27].
Reynolds & Postel [Page 15]
Assigned Numbers RFC 870
Documents
DOCUMENTS
---------
[1] Aerospace, Internal Report, ATM-83(3920-01)-3, 1982.
[2] BBN, "Specifications for the Interconnection of a Host and an
IMP", Report 1822, Bolt Beranek and Newman, Cambridge,
Massachusetts, revised, December 1981.
[3] Bennett, C., "A Simple NIFTP-Based Mail System", IEN 169,
University College, London, January 1981.
[4] Bhushan, A., "A Report on the Survey Project", RFC 530,
NIC 17375, 22 June 1973.
[5] Bisbey, R., D. Hollingworth, and B. Britt, "Graphics Language
(version 2.1)", ISI/TM-80-18, USC/Information Sciences
Institute, July 1980.
[6] 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.
[7] Braden, R., "NETRJS Protocol", RFC 740, NIC 42423,
22 November 1977. Also in [17].
[8] Bressler, B., "Remote Job Entry Protocol", RFC 407, NIC
12112, 16 October 72. Also in [17].
[9] Bressler, R., "Inter-Entity Communication -- An Experiment",
RFC 441, NIC 13773, 19 January 1973.
[10] CCA, "Datacomputer Version 5/4 User Manual", Computer
Corporation of America, August 1979.
[11] Clark, D., "Revision of DSP Specification", Local Network
Note 9, Laboratory for Computer Science, MIT, 17 June 1977.
[12] Cohen, D., "Specifications for the Network Voice Protocol",
RFC 741, ISI/RR 7539, USC/Information Sciences Institute,
March 1976.
[13] Cohen, D. and J. Postel, "Multiplexing Protocol", IEN 90,
USC/Information Sciences Institute, May 1979.
Reynolds & Postel [Page 16]
Assigned Numbers RFC 870
Documents
[14] 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.
[15] Crispin, M., "SUPDUP Protocol", RFC 734, NIC 41953,
7 October 1977. Also in [17].
[16] Feinler, E., "Internet Protocol Transition Workbook", Network
Information Center, SRI International, March 1982.
[17] 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.
[18] Forgie, J., "ST - A Proposed Internet Stream Protocol",
IEN 119, M.I.T. Lincoln Laboratory, September 1979.
[19] Forsdick, H., "CFTP", Network Message, Bolt Berenak and
Newman, January 1982.
[20] Harrenstien, K., "Name/Finger", RFC 742, NIC 42758,
30 December 1977. Also in [17].
[21] Harrenstien, K., V. White, and E. Feinler, "Hostnames Server",
RFC 811, SRI International, March 1982.
[22] Harrenstien, K., and V. White, "Nicname/Whois", RFC 812, SRI
International, March 1982.
[23] Haverty, J., "XNET Formats for Internet Protocol Version 4",
IEN 158, October 1980.
[24] Hinden, R., A. Sheltzer, "The DARPA Internet Gateway",
RFC 823, September 1982.
[25] Honeywell CISL, Internal Document, "AFSDSC Hyperchannel RPQ
Project Plan".
[26] Honeywell CISL, Internal Document, "Multics MR11 PFS".
[27] Korb, John T., "A Standard for the Transmission of IP
Datagrams Over Public Data Networks", RFC 877, Purdue
University, September 1983.
Reynolds & Postel [Page 17]
Assigned Numbers RFC 870
Documents
[28] Littauer, B., "A Host Monitoring Protocol", IEN 197, Bolt
Berenak and Newman, September 1981.
[29] Macgregor, W., and D. Tappan, "The CRONUS Virtual Local
Network", RFC 824, Bolt Beranek and Newman, 22 August 1982.
[30] Malis, A., "Logical Addressing Implementation Specification",
BBN Report 5256, pp 31-36, May 1983.
[31] 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.
[32] 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.
[33] 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.
[34] Postel, J., "Active Users", RFC 866, USC/Information Sciences
Institute, May 1983.
[35] Postel, J., "Character Generator Protocol", RFC 864,
USC/Information Sciences Institute, May 1983.
[36] Postel, J., "Daytime Protocol", RFC 867, USC/Information
Sciences Institute, May 1983.
[37] Postel, J., "Discard Protocol", RFC 863, USC/Information
Sciences Institute, May 1983.
[38] Postel, J., "Echo Protocol", RFC 862, USC/Information Sciences
Institute, May 1983.
[39] Postel, J., "File Transfer Protocol", RFC 765, IEN 149,
USC/Information Sciences Institute, June 1980.
[40] Postel, J., "Internet Control Message Protocol - DARPA
Internet Program Protocol Specification", RFC 792,
USC/Information Sciences Institute, September 1981.
[41] Postel, J., "Internet Message Protocol", RFC 759, IEN 113,
USC/Information Sciences Institute, August 1980.
Reynolds & Postel [Page 18]
Assigned Numbers RFC 870
Documents
[42] Postel, J., "Name Server", IEN 116, USC/Information Sciences
Institute, August 1979.
[43] Postel, J., "Quote of the Day Protocol", RFC 865,
USC/Information Sciences Institute, May 1983.
[44] Postel, J., "Remote Telnet Service", RFC 818, USC/Information
Sciences Institute, November 1982.
[45] Postel, J., "Simple Mail Transfer Protocol", RFC 821,
USC/Information Sciences Institute, August 1982.
[46] Postel, J., "User Datagram Protocol", RFC 768 USC/Information
Sciences Institute, August 1980.
[47] Postel, J., ed., "Internet Protocol - DARPA Internet Program
Protocol Specification", RFC 791, USC/Information Sciences
Institute, September 1981.
[48] Postel, J., ed., "Transmission Control Protocol - DARPA
Internet Program Protocol Specification", RFC 793,
USC/Information Sciences Institute, September 1981.
[49] Postel, J., and K. Harrenstien, "Time Protocol", RFC 868,
USC/Information Sciences Institute, May 1983.
[50] Postel, J., and J. Reynolds, "Telnet Protocol Specification",
RFC 854, USC/Information Sciences Institute, May 1983.
[51] Reed, D., "Protocols for the LCS Network", Local Network Note
3, Laboratory for Computer Science, MIT, 29 November 1976.
[52] Reynolds, J. and J. Postel, "Official Protocols", RFC 880,
USC/Information Sciences Institute, October 1983.
[53] Rosen, E., "Exterior Gateway Protocol" RFC 827, Bolt Berenak
and Newman, October 1982.
[54] Skelton, A., S. Holmgren, and D. Wood, "The MITRE Cablenet
Project", IEN 96, April 1979.
[55] Sollins, K., "The TFTP Protocol (Revision 2)", RFC 783,
MIT/LCS, June 1981.
[56] Solomon, M., L. Landweber, and D, Neuhengen, "The CSNET Name
Server", Computer Networks, v.6, n.3, pp. 161-172, July 1982.
Reynolds & Postel [Page 19]
Assigned Numbers RFC 870
Documents
[57] Sproull, R., and E. Thomas, "A Networks Graphics Protocol",
NIC 24308, 16 August 1974. Also in [17].
[58] "The Ethernet - A Local Area Network", Version 1.0, Digital
Equipment Corporation, Intel Corporation, Xerox Corporation,
September 1980.
[59] The High Level Protocol Group, "A Network Independent File
Transfer Protocol", INWG Protocol Note 86, December 1977.
[60] Whelan, D., "The Caltech Computer Science Department Network",
5052:DF:82, Caltech Computer Science Department, 1982.
[61] XEROX, "The Ethernet, A Local Area Network: Data Link Layer
and Physical Layer Specification", X3T51/80-50, Xerox
Corporation, Stamford, CT., October 1980.
[62] XEROX, "Internet Transport Protocols", XSIS 028112, Xerox
Corporation, Stamford, Connecticut, December 1981.
Reynolds & Postel [Page 20]
Assigned Numbers RFC 870
People
PEOPLE
------
[AGM] Andy Malis BBN Malis@BBN-UNIX
[APS] Anita Skelton MITRE skelton@MITRE
[AP] Alan Parker NRL parker@NRL-CSS
[AV] Al Vezza MIT AV@MIT-XX
[AXG] Atul Garg HP ---none---
[BG5] Bob Gilligan SRI Gilligan@SRI-KL
[BML] Barry Leiner ARPA Leiner@USC-ISIA
[BXA] Bobby W. Allen YPG WYMER@OFFICE
[CAK] Chris Kent PURDUE cak@PURDUE
[CC2] Chase Cotton UDEL Cotton@Udel-EE
[CJW2] Cliff Weinstein LL cjw@LL-11
[CLH3] Charles Hedrick RUTGERS Hedrick@RUTGERS
[CMR] Craig Rogers ISI Rogers@USC-ISIB
[DAM1] David A. Mosher UCB Mosher@BERKELEY
[DCP1] David Plummer MIT DCP@MIT-MC
[DCT] Dan Tappan BBN Tappan@BBNG
[DDC2] Dave Clark MIT-LCS Clark@MIT-Multics
[DHH] Doug Hunt BBN DHunt@BBN-Unix
[DK2] Dean B. Krafft CORNELL Dean@CORNELL
[DLM1] David Mills LINKABIT Mills@USC-ISID
[DM11] Dale McNeill BBN mcneill@BBN-Unix
[DPR] David Reed MIT-LCS DPR@MIT-XX
[DSW] Dan Whelan Caltech Dan@CIT-20
[EAK1] Earl Killian LLL EAK@MIT-MC
[EAT3] Ed Taft XEROX Taft.PA@PARC-MAXC
[EBM] Eliot Moss MIT EBM@MIT-XX
[EC5] Ed Cain DCEC cain@EDN-Unix
[EF5] Ed Franceschini NYU Franceschini@NYU
[EHP] Ed Perry SRI Perry@SRI-KL
[FAS] Fred Segovich Compion fred@COMPION-VMS
[GEOF] Geoff Goodfellow SRI Geoff@DARCOM-KA
[HCF2] Harry Forsdick BBN Forsdick@BBNG
[HDC1] Horst Clausen DFVLR Clausen@USC-ISID
[HDW2] Howard Wactlar CMU Wactlar@CMU-10B
[HH6] Heidi Heiden DCA Heiden@BBNC
[HM] Hank Magnuski --- JOSE@PARC-MAXC
[JAKE] Jake Feinler SRI Feinler@SRI-KL
[JAR4] Jim Rees WASHINGTON JIM@WASHINGTON
[JAW3] Jil Westcott BBN Westcott@BBNF
[JBP] Jon Postel ISI Postel@USC-ISIF
[JC11] Jim Clifford LANL jrc@LANL
[JCM] Jeff Mogul STANFORD Mogul@SU-SCORE
[JD21] Jonathan Dreyer BBN JDreyer@BBN-Unix
[JDG] Jim Guyton RAND guyton@RAND-Unix
[JEM] Jim Mathis SRI Mathis@SRI-KL
[JFH2] Jack Haverty BBN Haverty@BBN-Unix
Reynolds & Postel [Page 21]
Assigned Numbers RFC 870
People
[JGH] Jim Herman BBN Herman@BBN-Unix
[JO5] John O'Donnell YALE ODonnell@YALE
[JRM1] John Mullen MITRE Mullen@MITRE
[JSG5] Jon Goodridge BBN jsg@BBN-UNIX
[JWF] Jim Forgie LL Forgie@BBNC
[JXS] Jeffrey R. Schwab PURDUE jrs@PURDUE
[JZS] Joanne Sattely CCA JZS@CCA
[KLH] Ken Harrenstien SRI KLH@NIC
[KRS] Karen Sollins MIT Sollins@MIT-XX
[LB1] Liudvikas Bukys ROCHESTER Bukys@ROCHESTER
[LCN] Lou Nelson AEROSPACE Lou@AEROSPACE
[LCS] Lou Schreier SRI Schreier@USC-ISID
[LH2] Lincoln Hu COLUMBIA Hu@Columbia-20
[LLG] Larry Garlick XEROX Garlick@PARC-MAXC
[LM8] Liza Martin MIT-LCS Martin@MIT-XX
[MBG] Michael Greenwald MIT-LCS Greenwald@MIT-Multics
[MB] Michael Brescia BBN Brescia@BBN-Unix
[MCSJ] Mike StJohns AFDSC StJohns@MIT-MULTICS
[MH12] Mark Horton ATT mark@BERKELEY
[MHS1] Marvin Solomon WISC Solomon@UWISC
[MJM2] Mike Muuss BRL Mike@BRL
[MO2] Michael O'Brien RAND OBrien@RAND-Unix
[MRC] Mark Crispin Stanford Admin.MRC@SU-SCORE
[MXB] Mark Brown USC Mark@USC-ECLB
[MXR] Marshall Rose Irvine MRose.UCI@RAND-Relay
[NC3] J. Noel Chiappa MIT JNC@MIT-XX
[NM] Neil MacKenzie RSRE T45@USC-ISID
[NXK] Neil Katin HP hpda.neil@BERKELEY
[PK] Peter Kirstein UCL Kirstein@USC-ISIA
[PM1] Paul Mockapetris ISI Mockapetris@USC-ISIF
[PS3] Paal Spilling NDRE Paal@DARCOM-KA
[PXD] Pieter Ditmars BBN pditmars@BBN-UNIX
[PXN] Peter Nellessen SIEMENS crtvax!pn@CMU-CS-SPICE
[RA11] Rick Adams CCI rlgvax!ra@SEISMO
[RB6] Richard Bisbey ISI Bisbey@USC-ISIB
[RDB2] Robert Bressler BBN Bressler@BBN-Unix
[REK2] Robert Kahn ARPA Kahn@USC-ISIA
[RF1] Randy Frank UTAH Frank@UTAH-20
[RH6] Robert Hinden BBN Hinden@BBN-Unix
[RHT] Robert Thomas BBN BThomas@BBNG
[RK1] Richard Kovalcik Honeywell Kovalcik@MIT-MULTICS
[RLB1] Bob Brown USRA rlb@ames-vmsb
[RLH2] Ronald L. Hartung NSWC ron@nswc-wo
[RR2] Raleigh Romine Teledyne romine@SEISMO
[RS23] Russel Sandberg WISC root@UWISC
[RTB] Bob Braden UCLA Braden@USC-ISIA
[SC3] Steve Casner ISI Casner@USC-ISIB
[SGC] Steve Chipman BBN Chipman@BBNA
Reynolds & Postel [Page 22]
Assigned Numbers RFC 870
People
[SK] Steve Kille UCL UKSAT@USC-ISID
[SXM] Scott Marcus Spartacus ---none---
[TC4] Tony Cincotta DTNSRDC tony@NALCON
[WIM] William Macgregor BBN macg@BBN
[ZSU] Zaw-Sing Su SRI ZSu@SRI-TSC
Reynolds & Postel [Page 23]
Assigned Numbers RFC 870
APPENDIX A
APPENDIX A
----------
This appendix summarizes the agreements reached by the DDN/PMO and
DARPA at a September 1982 meeting concerning the allocation and
assignment of the various numbers associated with DoD Protocol
Standards and the DARPA Experimental Standards.
Recommended policy is summarized for each type of number assignment
of concern:
Network Identifiers used by the Internet Protocol
It is recommended that the available number spaces for class A,
B, and C network addresses be allocated among R&D, DoD and
commercial uses, and that assignments of these addresses be the
responsibility respectively of DARPA, DCA PCCO/DDN and the
National Bureau of Standards. The recommended allocations are
given below.
Class A (highest-order bit 0)
R&D allocation: 8 nets
DoD allocation: 24 nets
Commercial allocation: 94 nets
Reserved Addresses: 0,127
Class B (highest-order bits 1-0)
R&D allocation: 1024 nets
DoD allocation: 3072 nets
Commercial allocation: 12286 nets
Reserved Addresses: 0,16383
Class C (highest-order bits 1-1-0)
R&D allocation: 65536 nets
DoD allocation: 458725 nets
Commercial allocation: 1572862 nets
Reserved Addresses: 0,2097151
Class D (highest-order bits 1-1-1)
All addresses in this class are reserved for future use,
possibly in support of multicast services. They should be
allocated to R&D use for the present.
Reynolds & Postel [Page 24]
Assigned Numbers RFC 870
APPENDIX A
Within the R&D community, it will be the policy that network
identifiers will only be granted to applicants who show
evidence that they are acquiring standard Bolt Beranek and
Newman gateway software or have implemented or are acquiring a
gateway meeting the Exterior Gateway Protocol requirements.
Acquisition of the Berkeley BSD 4.2 UNIX software might be
considered evidence of the latter.
Experimental networks which later become operational need not
be renumbered. Rather, the identifiers could be moved from R&D
to DoD or Commercial status. Thus, network identifiers may
change state among R&D, DoD and commercial, but the number of
identifiers allocated to each use should remain within the
limits indicated above. To make possible this fluid
assignment, it is recommended that the network identifier
spaces not be allocated by simple partition but rather by
specific assignment.
Protocol Identifiers
In general, all assignments will be made by the R&D community,
but any numbers which become R&D, DoD, national or
international standards will be marked as such in this RFC.
Protocol identifiers 0 and 255 are reserved.
95 protocol identifiers are allocated for assignment to DoD
standards, 32 for R&D use, and 127 for Commercial, national or
international standards.
Port Numbers
A recommendation for allocation and assignment of port numbers
is to be developed jointly by representatives of the ICCB and
PSTP.
ARPANET Link Numbers
All unnecessary link number usage will be eliminated by joint
effort of the ICCB, PSTP and BBN.
BBN will give consideration to the use of link numbers to
promote interoperability among various ARPANET interfaces and
report to the ICCB, PSTP and DDN/PMO. Examples of possible
interoperability issues are:
(i) interoperability of 1822 and X.25 interfaces
(ii) interoperability of SIP and other interfaces
(iii) logical addressing or other special services
Reynolds & Postel [Page 25]
Assigned Numbers RFC 870
APPENDIX A
IP Version Numbers
These numbers will be assigned only by the R&D community for
the purpose of exploring alternatives in internet protocol
service expansion, such as inclusion of stream protocol (ST)
services.
TCP, IP and Telnet Option Identifiers
These numbers will be assigned by the R&D community. Any
permanent or experimental assignments will be identified in the
documents specifying those protcols.
Implementation:
This policy recommendation has not been fully implemented as yet.
Currently, Joyce Reynolds is acting coordinator for all number
assignments.
Reynolds & Postel [Page 26]