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IANA Allocation Guidelines for the Protocol Field
RFC 5237 part of BCP 37

Revision differences

Document history

Date By Action
2026-05-20
(System) Changed metadata: changed keywords to '['ipv4 header', 'next header field', 'internet', 'assigned', 'numbers', 'authority', 'IP']' from '[]'
2026-05-20
(System) Metadata update from RFC Editor
2026-05-20
(System) Changed author "S. Bradner": changed name from "Scott Bradner" to "S. Bradner", cleared country (was "US"), changed order from "1" to "2"
2026-05-20
(System) Changed author "J. Arkko": changed name from "Jari Arkko" to "J. Arkko", cleared country (was "Finland"), changed order from "0" to "1"
2026-05-20
(System) Metadata update from RFC Editor
2023-12-12
(System) Imported membership of rfc5237 in bcp37 via sync to the rfc-index
2023-12-12
(System) No history of BCP37 is currently available in the datatracker before this point
2015-10-14
(System) Notify list changed from sob@harvard.edu, jari.arkko@piuha.net to (None)
2008-03-26
Amy Vezza State Changes to RFC Published from RFC Ed Queue by Amy Vezza
2008-03-26
Amy Vezza [Note]: 'RFC 5237' added by Amy Vezza
2008-02-28
(System) RFC published