File Transfer Protocol
This specification has been revised 7 times since RFC 171 (1971). Each document below formally obsoleted the one before it; the versions still in force are listed first.
Revision timeline
Current version — implement against this
Superseded versions — historical reference only
- RFC 171The Data Transfer ProtocolObsoletedJune 1971replaced by RFC264
- RFC 172The File Transfer ProtocolObsoletedJune 1971replaced by RFC265
- RFC 264The Data Transfer ProtocolObsoletedJanuary 1972replaced by RFC354
- RFC 265The File Transfer ProtocolObsoletedNovember 1971replaced by RFC354
- RFC 354File Transfer ProtocolObsoletedJuly 1972replaced by RFC542
- RFC 542File Transfer ProtocolObsoletedAugust 1973replaced by RFC765
- RFC 765File Transfer Protocol specificationObsoletedJune 1980replaced by RFC959
This lineage is derived automatically from the “obsoletes” relationships recorded in the public RFC Editor index — no editorial judgement is applied to the ordering. The most recent document in the chain is RFC 959 (October 1985).