| Number | Files | Title | Authors | Date | More Info | Status |
|---|---|---|---|---|---|---|
| RFC 4289, BCP 13 | ASCII, PDF | Multipurpose Internet Mail Extensions (MIME) Part Four: Registration Procedures | N. Freed, J. Klensin | December 2005 | Obsoletes RFC 2048 | Best Current Practice |
| RFC 6838, BCP 13 | ASCII, PDF | Media Type Specifications and Registration Procedures | N. Freed, J. Klensin, T. Hansen | January 2013 | Obsoletes RFC 4288, Updated by RFC 9694 | Best Current Practice |
| RFC 9694, BCP 13 | ASCII, PDF | Guidelines for the Definition of New Top-Level Media Types | M.J. Dürst | March 2025 | Updates RFC 6838 | Best Current Practice |
Abstract of RFC 4289
This document specifies IANA registration procedures for MIME external body access types and content-transfer-encodings. This document specifies an Internet Best Current Practices for the Internet Community, and requests discussion and suggestions for improvements.
Abstract of RFC 6838
This document defines procedures for the specification and registration of media types for use in HTTP, MIME, and other Internet protocols. This memo documents an Internet Best Current Practice.
Abstract of RFC 9694
This document defines best practices for defining new top-level media types. It also introduces a registry for top-level media types, and contains a short history of top-level media types. It updates RFC 6838.
For the definition of Status, see RFC 2026.
For the definition of Stream, see RFC 8729.