UpdatedINFORMATIONALLegacy stream

RFC 1166: Internet numbers

Still current, but amended. Parts of this document are changed or extended by RFC 5737. Read both.

In plain English — editorial summary, not part of the RFC

This memo is a status report on the network numbers and autonomous system numbers used in the Internet community.

Document record

Document ID: RFC1166
Published: July 1990
Authors: S. Kirkpatrick; M.K. Stahl; M. Recker
Status: INFORMATIONAL
Stream: Legacy
Area: —
Pages: 182
Also known as: —

Obsoletes:: RFC 1020, RFC 1062, RFC 1117
Updated by:: RFC 5737

Standards lineage

This document is one revision in a chain of 5 RFCs, each formally replacing the one before it.

Read the full history of Internet numbers →

Referenced by

One later RFC formally updates or obsoletes part of this document.

RFC 5737IPv4 Address Blocks Reserved for DocumentationCurrent
January 2010

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About this page

The document record above — title, authors, date, status, stream, area, relationships, DOI and errata — is imported verbatim from the public RFC Editor index. The “in plain English” section is editorial: written by The metasystema editorial team, not part of the RFC. Where the two differ, the RFC text governs.

Last checked against the RFC Editor index on 23 August 2026. RFCs are never revised after publication; changes are issued as new documents.

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