RFC 121 · UNKNOWN · 1971
MON · 15 JUN 2026
Network on-line operators
Overview
RFC 121, “Network on-line operators”, is an Unknown document published in April 1971 by M. Krilanovich. 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 121 is hosted at rfc-editor.org. Available in TXT,HTML.
Other RFCs from 1971
- RFC 120 Network PL1 subprograms
- RFC 122 Network specifications for UCSB's Simple-Minded File System
- RFC 119 Network Fortran Subprograms
- RFC 123 Proffered Official ICP
- RFC 118 Recommendations for facility documentation
- RFC 124 Typographical error in RFC 107
- RFC 117 Some comments on the official protocol
- RFC 125 Response to RFC 86: Proposal for Network Standard Format for a Graphics Data Stream