The headers defined in this specification must be registered with IANA. See permanent [1] managed by IETF under RFC 3864 [2]. Ideally, this specification would have gone to IETF, but it looks like this WG has defined that there is no problem in going ahead with the work in W3C.
Nikunj [1] http://www.iana.org/assignments/message-headers/perm-headers.html [2] http://www.rfc-editor.org/rfc/rfc3864.txt
