BCP 13

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BCPs are stable identifiers for Best Current Practices. A BCP may consist of a single RFC or a group of RFCs related to a specific IETF process or recommended guidelines. The collection may become empty as the BCP evolves.

RFC 4289: BCP 13: Multipurpose Internet Mail Extensions (MIME) Part Four: Registration Procedures

Best Current Practice

N. Freed
J. Klensin

December 2005
IETF publication

Abstract

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.

RFC 6838: BCP 13: Media Type Specifications and Registration Procedures

Best Current Practice

N. Freed
J. Klensin
T. Hansen

January 2013
IETF publication
Applications and Real-Time Area

Abstract

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.

RFC 9694: BCP 13: Guidelines for the Definition of New Top-Level Media Types

Best Current Practice

M.J. Dürst

March 2025
IETF publication
Applications and Real-Time Area

Abstract

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.

BCP 13

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RFC 4289: BCP 13: Multipurpose Internet Mail Extensions (MIME) Part Four: Registration Procedures

Abstract

Abstract

RFC 6838: BCP 13: Media Type Specifications and Registration Procedures

Abstract

Abstract

RFC 9694: BCP 13: Guidelines for the Definition of New Top-Level Media Types

Abstract

Abstract