RFC 739 · HISTORIC · 1977
MON · 27 JUL 2026
Assigned numbers
Overview
RFC 739, “Assigned numbers”, is a Historic document published in November 1977 by J. Postel. It obsoletes RFC 503, RFC 604. It has been obsoleted by RFC 750 — refer to the newer document for the authoritative version. The canonical text is published by the RFC Editor.
What “Historic” means
A specification that has been superseded or is otherwise no longer recommended for use.
Read this RFC
The canonical text of RFC 739 is hosted at rfc-editor.org. Available in TXT,HTML.
Relationships to other RFCs
Other RFCs from 1977