(RFC 3680 published April 2011, subtype last updated April 2011)

MIME media type name: application

MIME subtype name: reginfo+xml

Mandatory parameters: none

Optional parameters: Same as charset parameter application/xml
     as specified in RFC 3023 [8].

Encoding considerations: Same as encoding considerations of
     application/xml as specified in RFC 3023 [8].

Security considerations: See Section 10 of RFC 3023 [8] and
     Section 7 of this specification.

Interoperability considerations: none.

Published specification: This document.

Applications which use this media type: This document type is
     being used in notifications to alert SIP user agents that
     their registrations have expired and must be redone.

Additional Information:

     Magic Number: None

     File Extension: .rif or .xml

     Macintosh file type code: "TEXT"

Personal and email address for further information: Jonathan
     Rosenberg, <jdrosen&jdrosen.net>

Intended usage: COMMON

Author/Change controller: The IETF.