Textual Conventions for Internet Network Addresses

This specification has been revised 2 times since RFC 2851 (2000). Each document below formally obsoleted the one before it; the versions still in force are listed first.

Revision timeline

  1. RFC 2851 (2000)
  2. RFC 3291 (2002)
  3. RFC 4001 (2005)

Current version — implement against this

Superseded versions — historical reference only

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 4001 (March 2005).