RFC 331 · UNKNOWN · 1972
SUN · 14 JUN 2026
IMP System Change Notification
Overview
RFC 331, “IMP System Change Notification”, is an Unknown document published in April 1972 by J.M. McQuillan. It has been obsoleted by RFC 343 — refer to the newer document for the authoritative version. The canonical text is published by the RFC Editor.
What “Unknown” means
The standards-track status of this early RFC was never formally classified.
Read this RFC
The canonical text of RFC 331 is hosted at rfc-editor.org. Available in TXT,HTML.
Relationships to other RFCs
Other RFCs from 1972
- RFC 330 Network Host Status
- RFC 332 Network Host Status
- RFC 329 ARPA Network Mailing Lists
- RFC 333 Proposed experiment with a Message Switching Protocol
- RFC 328 Suggested Telnet Protocol Changes
- RFC 334 Network Use on May 8
- RFC 327 Data and File Transfer workshop notes
- RFC 335 New Interface - IMP/360