RFC 343 · UNKNOWN · 1972
MON · 15 JUN 2026
IMP System change notification
Overview
RFC 343, “IMP System change notification”, is an Unknown document published in May 1972 by A.M. McKenzie. It obsoletes RFC 331. It has been obsoleted by RFC 359 — 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 343 is hosted at rfc-editor.org. Available in TXT,HTML.
Relationships to other RFCs
Other RFCs from 1972