Media Type Specifications and Registration Procedures

This specification has been revised 12 times since RFC 1341 (1992). Each document below formally obsoleted the one before it; the versions still in force are listed first.

Revision timeline

  1. RFC 1341 (1992)
  2. RFC 1342 (1992)
  3. RFC 1521 (1993)
  4. RFC 1522 (1993)
  5. RFC 1590 (1994)
  6. RFC 2045 (1996)
  7. RFC 2046 (1996)
  8. RFC 2047 (1996)
  9. RFC 2048 (1996)
  10. RFC 2049 (1996)
  11. RFC 4288 (2005)
  12. RFC 4289 (2005)
  13. RFC 6838 (2013)

Current versions — implement against these

Superseded versions — historical reference only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 6838 (January 2013).