RFC 439 · UNKNOWN · 1973
MON · 15 JUN 2026
PARRY encounters the DOCTOR
Overview
RFC 439, “PARRY encounters the DOCTOR”, is an Unknown document published in January 1973 by V. Cerf. 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 439 is hosted at rfc-editor.org. Available in TXT,HTML.
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- RFC 440 Scheduled network software maintenance
- RFC 437 Data Reconfiguration Service at UCSB
- RFC 441 Inter-Entity Communication - an experiment
- RFC 436 Announcement of RJS at UCSB
- RFC 442 Current flow-control scheme for IMPSYS
- RFC 435 Telnet issues
- RFC 443 Traffic statistics