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RFC 5646: Tags for Identifying Languages

In plain English — editorial summary, not part of the RFC

This document describes the structure, content, construction, and semantics of language tags for use in cases where it is desirable to indicate the language used in an information object. It also describes how to register values for use in language tags and the creation of user-defined extensions for private interchange. This document specifies an Internet Best Current Practices for the Internet Community, and requests discussion and suggestions for improvements.

Document record

Document ID
RFC5646
Published
September 2009
Authors
A. Phillips; M. Davis
Status
BEST CURRENT PRACTICE
Stream
IETF
Area
app
Pages
84
Also known as
BCP47
Obsoletes:
RFC 4646

Topics

Standards lineage

This document is one revision in a chain of 6 RFCs, each formally replacing the one before it.

  1. RFC 1766 (1995)
  2. RFC 3066 (2001)
  3. RFC 3282 (2002)
  4. RFC 4646 (2006)
  5. RFC 4647 (2006)
  6. RFC 5646 (2009)

Read the full history of Tags for Identifying Languages →

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About this page

The document record above — title, authors, date, status, stream, area, relationships, DOI and errata — is imported verbatim from the public RFC Editor index. The “in plain English” section is editorial: written by The metasystema editorial team, not part of the RFC. Where the two differ, the RFC text governs.

Last checked against the RFC Editor index on . RFCs are never revised after publication; changes are issued as new documents.

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canonical URL: /rfc/5646-tags-for-identifying-languages