RFC 663 · UNKNOWN · 1974
MON · 15 JUN 2026
Lost message detection and recovery protocol
Overview
RFC 663, “Lost message detection and recovery protocol”, is an Unknown document published in November 1974 by R. Kanodia. The canonical text is published by the RFC Editor.
Abstract
Proposed extension of host-host protocol; see also RFCs 534, 516, 512, 492 and 467.
What “Unknown” means
The standards-track status of this early RFC was never formally classified.
Read this RFC
The canonical text of RFC 663 is hosted at rfc-editor.org. Available in TXT,HTML.
Other RFCs from 1974
- RFC 662 Performance improvement in ARPANET file transfers from Multics
- RFC 661 Protocol information
- RFC 660 Some changes to the IMP and the IMP/Host interface
- RFC 666 Specification of the Unified User-Level Protocol
- RFC 659 Announcing additional Telnet options
- RFC 667 Host Ports
- RFC 658 Telnet output linefeed disposition
- RFC 657 Telnet output vertical tab disposition option