rfc820.txt
来自「RFC 的详细文档！」· 文本 代码 · 共 1,277 行 · 第 1/4 页
TXT
1,277 行
Network Working Group J. Postel
Request for Comments: 820 J. Vernon
January 1983
Obsoletes RFCs: 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 Jon Postel. The assignment of
numbers is also handled by Jon, subject to the agreement between
DARPA/IPTO and DDN/PMO about number allocation, documented in Appendix A
of this RFC. If you are developing a protocol or application that will
require the use of a link, socket, port, protocol, or network number
please contact Jon to receive a number assignment.
Jon Postel
USC - Information Sciences Institute
4676 Admiralty Way
Marina del Rey, California 90291
phone: (213) 822-1511
ARPANET mail: POSTEL@ISIF
The ARPANET community is making the transition form the ARPANET to the
ARPA Internet. This has been characterized as the NCP/TCP transition
[63], although many other the protocols are involved, too. The working
documents for the new Internet environment have been collected by the
Network Information Center (NIC) in a book entitled the "Internet
Protocol Transition Workbook" [62].
Most of the protocols mentioned here are documented in the RFC series of
notes. The more prominent and more generally used are documented in the
"Internet Protocol Transition Workbook" or in the old "Protocol
Handbook" [17] prepared by the NIC. Some of the items listed are
undocumented.
In all cases the name and mailbox of the responsible individual is
indicated. In the lists that follow, a bracketed entry, e.g., [17,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.
Postel [Page 1]
RFC 820 January 1983
Assigned Numbers
Network Numbers
ASSIGNED NETWORK NUMBERS
The network numbers listed here are used as internet addresses by the
Internet Protocol (IP) [33,62]. 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 1-0-0. 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
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.
Postel [Page 2]
RFC 820 January 1983
Assigned Numbers
Network Numbers
The dotted decimal notation will be used in the listing of assigned
network numbers. The class A networks will have nnn.rrr.rrr.rrr, the
class B networks will have nnn.nnn.rrr.rrr, and the class C networks
will have nnn.nnn.nnn.rrr, where nnn represents part or all of a
network number and rrr represents part or all of a local address or
rest field.
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.
To reflect the allocation of network identifiers among various
categories (see Appendix A), 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.
Assigned Network Numbers
Class A Networks
* Internet Address Name Network References
---------------- ---- ------- ----------
000.rrr.rrr.rrr Reserved [JBP]
R 001.rrr.rrr.rrr T BBN-PR BBN Packet Radio Network [JAW3]
R 002.rrr.rrr.rrr T SF-PR-1 SF-1 Packet Radio Network [JEM]
R 003.rrr.rrr.rrr RCC-NET BBN RCC Network [JGH]
R 004.rrr.rrr.rrr SATNET Atlantic Satellite Network[DM11]
D 005.rrr.rrr.rrr T DEMO-PR-1 Demo-1 Packet Radio Network[LCS]
R 006.rrr.rrr.rrr T SF-PR-2 SF-2 Packet Radio Network [JEM]
007.rrr.rrr.rrr Unassigned [JBP]
R 008.rrr.rrr.rrr BBN-NET BBN Network [JGH]
D 009.rrr.rrr.rrr T BRAGG-PR Ft. Bragg Packet Radio Net [JEM]
R 010.rrr.rrr.rrr ARPANET ARPANET [17,1,REK2]
R 011.rrr.rrr.rrr T UCLNET University College London [PK]
012.rrr.rrr.rrr Unassigned [JBP]
013.rrr.rrr.rrr Unassigned [JBP]
C 014.rrr.rrr.rrr PDN Public Data Network [REK2]
015.rrr.rrr.rrr Unassigned [JBP]
016.rrr.rrr.rrr Unassigned [JBP]
017.rrr.rrr.rrr Unassigned [JBP]
R 018.rrr.rrr.rrr MIT MIT Network [10,43,NC3]
019.rrr.rrr.rrr Unassigned [JBP]
020.rrr.rrr.rrr Unassigned [JBP]
D 021.rrr.rrr.rrr EDN DCEC EDN [EC5]
022.rrr.rrr.rrr Unassigned [JBP]
R 023.rrr.rrr.rrr MITRE MITRE Cablenet [44,APS]
024.rrr.rrr.rrr Unassigned [JBP]
Postel [Page 3]
RFC 820 January 1983
Assigned Numbers
Network Numbers
R 025.rrr.rrr.rrr RSRE-PPSN RSRE / PPSN [NM]
D 026.rrr.rrr.rrr MILNET MILNET [HH6]
R 027.rrr.rrr.rrr NOSC-LCCN NOSC / LCCN [KTP]
R 028.rrr.rrr.rrr WIDEBAND Wide Band Satellite Net [CJW2]
029.rrr.rrr.rrr Unassigned [JBP]
R 030.rrr.rrr.rrr DCN-UCL UCL DCNET [PK]
031.rrr.rrr.rrr Unassigned [JBP]
R 032.rrr.rrr.rrr UCL-TAC UCL TAC [PK]
033.rrr.rrr.rrr Unassigned [JBP]
034.rrr.rrr.rrr Unassigned [JBP]
R 035.rrr.rrr.rrr RSRE-NULL RSRE Null Network [NM]
R 036.rrr.rrr.rrr T SU-NET Stanford University Network[JCM]
037.rrr.rrr.rrr Unassigned [JBP]
038.rrr.rrr.rrr Unassigned [JBP]
R 039.rrr.rrr.rrr SRINET SRI Local Network [GEOF]
040.rrr.rrr.rrr Unassigned [JBP]
R 041.rrr.rrr.rrr BBN-LN-TEST BBN Local Network Testbed [KTP]
042.rrr.rrr.rrr Unassigned [JBP]
043.rrr.rrr.rrr Unassigned [JBP]
R 044.rrr.rrr.rrr AMPRNET Amateur Radio Experiment Net[HM]
R 045.rrr.rrr.rrr T C3-PR Testbed Development PRNET [BG5]
R 046.rrr.rrr.rrr UCB-ETHER UC Berkeley Ethernet [SXL]
R 047.rrr.rrr.rrr T SAC-PR SAC Packet Radio Network [BG5]
R 048.rrr.rrr.rrr NDRE-TIU NDRE-TIU [PS3]
049.rrr.rrr.rrr Unassigned [JBP]
R 050.rrr.rrr.rrr NDRE-RING NDRE-RING [PS3]
051.rrr.rrr.rrr Unassigned [JBP]
R 052.rrr.rrr.rrr T ROCKWELL-PR Rockwell Packet Radio Net [EHP]
053.rrr.rrr.rrr-126.rrr.rrr.rrr Unassigned [JBP]
127.rrr.rrr.rrr Reserved [JBP]
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 ISI Local Network [CMR]
R 128.010.rrr.rrr PURDUE-CS Purdue Computer Science [CXK]
R 128.011.rrr.rrr BBN-CRONUS BBN DOS Project [12,WIM]
R 128.012.rrr.rrr SU-NET Stanford University Net [JCM]
Postel [Page 4]
RFC 820 January 1983
Assigned Numbers
Network Numbers
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]
128.017.rrr.rrr Unassigned [JBP]
128.018.rrr.rrr Unassigned [JBP]
128.019.rrr.rrr Unassigned [JBP]
128.020.rrr.rrr Unassigned [JBP]
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-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.xxx.rrr-192.004.xxx.rrr BBN local networks [SGC]
R 192.005.001.rrr CISLNET CISL Multics Network [CH2]
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]
D 192.005.005.rrr BRLNET BRLNET [1,MJM2]
D 192.005.006.rrr MINET MINET [1,DHH]
R 192.005.007.rrr CIT-CS-NET Caltech-CS-Net [65,DSW]
R 192.005.008.rrr WASHINGTON University of Washington [JAR4]
R 192.005.009.rrr AERONET Aerospace Labnet [9,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]
192.005.013.rrr Unassigned [JBP]
192.005.014.rrr Unassigned [JBP]
192.005.015.rrr Unassigned [JBP]
192.005.016.rrr Unassigned [JBP]
192.005.017.rrr Unassigned [JBP]
192.005.018.rrr Unassigned [JBP]
192.005.019.rrr Unassigned [JBP]
192.005.020.rrr Unassigned [JBP]
D 192.005.021.rrr BRLNET1 BRLNET1 [1,MJM2]
Postel [Page 5]
RFC 820 January 1983
Assigned Numbers
Network Numbers
D 192.005.022.rrr BRLNET2 BRLNET2 [1,MJM2]
D 192.005.022.rrr BRLNET3 BRLNET3 [1,MJM2]
D 192.005.022.rrr BRLNET4 BRLNET4 [1,MJM2]
D 192.005.022.rrr BRLNET5 BRLNET54 [1,MJM2]
192.005.026.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
Class A B C Total
Research 26 19 1033 1078
Defense 4 5 7 16
Commercial 1 0 2 3
⌨️ 快捷键说明
复制代码Ctrl + C
搜索代码Ctrl + F
全屏模式F11
增大字号Ctrl + =
减小字号Ctrl + -
显示快捷键?