URI: urn:ietf:params:xml:ns:xmpp-tls Specification: RFC-ietf-xmpp-3920bis-22 Description: This is the XML namespace name for STARTTLS negotiation data in the Extensible Messaging and Presence Protocol (XMPP) as defined by RFC-ietf-xmpp-3920bis-22. Registrant Contact: IESG