RFC 4646
From Wikistandards
Internet Engineering Task Force language tagging standard.
Draws on ISO standards and UN standards.
- ISO 639-1
- ISO 639-2
- ISO 15924 (scripts)
- ISO 3166-1 (country codes)
- UN M49 region codes
- IANA registered extensions and variants
Adopted by the IT community and used widely. Future work currently underway will include ISO 639-3 and ISO 639-6.
