RFC 2073 · PROPOSED STANDARD · 1997
SUN · 14 JUN 2026
An IPv6 Provider-Based Unicast Address Format
Overview
RFC 2073, “An IPv6 Provider-Based Unicast Address Format”, is a Proposed Standard document published in January 1997 by Y. Rekhter, P. Lothberg, R. Hinden, S. Deering, J. Postel. It has been obsoleted by RFC 2374 — refer to the newer document for the authoritative version. The canonical text is published by the RFC Editor.
Abstract
This document defines an IPv6 provider-based unicast address format for use in the Internet. [STANDARDS-TRACK]
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
Read this RFC
The canonical text of RFC 2073 is hosted at rfc-editor.org. Available in TXT,HTML.
Relationships to other RFCs
Other RFCs from 1997
- RFC 2072 Router Renumbering Guide
- RFC 2074 Remote Network Monitoring MIB Protocol Identifiers
- RFC 2071 Network Renumbering Overview: Why would I want it and what is it anyway?
- RFC 2075 IP Echo Host Service
- RFC 2070 Internationalization of the Hypertext Markup Language
- RFC 2076 Common Internet Message Headers
- RFC 2069 An Extension to HTTP : Digest Access Authentication
- RFC 2077 The Model Primary Content Type for Multipurpose Internet Mail Extensions