RFC 5509 · PROPOSED STANDARD · 2009
SUN · 14 JUN 2026
Internet Assigned Numbers Authority Registration of Instant Messaging and Presence DNS SRV RRs for the Session Initiation Protocol
Overview
RFC 5509, “Internet Assigned Numbers Authority Registration of Instant Messaging and Presence DNS SRV RRs for the Session Initiation Protocol”, is a Proposed Standard document published in April 2009 by S. Loreto. The canonical text is published by the RFC Editor.
Abstract
This document registers with IANA two new DNS SRV protocol labels for resolving Instant Messaging and Presence services with SIP. [STANDARDS TRACK]
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
Read this RFC
The canonical text of RFC 5509 is hosted at rfc-editor.org. Available in TXT,HTML.
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