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Assigned numbers (RFC0923)

IP.com Disclosure Number: IPCOM000004334D
Original Publication Date: 1984-Oct-01
Included in the Prior Art Database: 2000-Oct-06
Document File: 37 page(s) / 92K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

J.K. Reynolds: AUTHOR [+2]

Abstract

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.

This text was extracted from a ASCII Text document.
This is the abbreviated version, containing approximately 3% of the total text.

Network Working Group J. Reynolds

Request for Comments: 923 J. Postel

ISI

Obsoletes RFCs: 900, 870, 820, October 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. Distribution of this memo

is unlimited.

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" [33] or in the old

"ARPANET Protocol Handbook" [34] prepared by the NIC. Some of the

items listed are undocumented. Further information on protocols can

be found in the memo "Official ARPA-Internet Protocols" [89].

In all cases the name and mailbox of the responsible individual is

indicated. In the lists that follow, a bracketed entry, e.g.,

[nn,iii], at the right hand margin of the page indicates a reference

for the listed protocol, where the number ("nn") cites the document

and the letters ("iii") cites the person. Whenever possible, letters

are a NIC Ident as used in the WHOIS service.

Assigned Numbers RFC 923

Network Numbers

ASSIGNED NETWORK NUMBERS

The network numbers listed here are used as internet addresses by the

Internet Protocol (IP) [33,77]. 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 ...