RFC 5645 · INFORMATIONAL · 2009
SUN · 14 JUN 2026
Update to the Language Subtag Registry
Overview
RFC 5645, “Update to the Language Subtag Registry”, is an Informational document published in September 2009 by D. Ewell. The canonical text is published by the RFC Editor.
Abstract
This memo defines the procedure used to update the IANA Language Subtag Registry, in conjunction with the publication of RFC 5646, for use in forming tags for identifying languages. This memo provides information for the Internet community.
What “Informational” means
Published for the general information of the community. It does not define an IETF standard and carries no standards-track status.
Read this RFC
The canonical text of RFC 5645 is hosted at rfc-editor.org. Available in TXT,HTML.
Other RFCs from 2009
- RFC 5644 IP Performance Metrics : Spatial and Multicast
- RFC 5646 Tags for Identifying Languages
- RFC 5643 Management Information Base for OSPFv3
- RFC 5647 AES Galois Counter Mode for the Secure Shell Transport Layer Protocol
- RFC 5642 Dynamic Hostname Exchange Mechanism for OSPF
- RFC 5648 Multiple Care-of Addresses Registration
- RFC 5641 Layer 2 Tunneling Protocol Version 3 Extended Circuit Status Values
- RFC 5649 Advanced Encryption Standard Key Wrap with Padding Algorithm