RFC 9371 · INFORMATIONAL · 2023
SUN · 14 JUN 2026
Registration Procedures for Private Enterprise Numbers
Overview
RFC 9371, “Registration Procedures for Private Enterprise Numbers”, is an Informational document published in March 2023 by A. Baber, P. Hoffman. The canonical text is published by the RFC Editor.
Abstract
This document describes how Private Enterprise Numbers (PENs) are registered by IANA. It shows how to request a new PEN and how to modify a current PEN. It also gives a brief overview of PEN uses.
What “Informational” means
Published for the general information of the community. It does not define an IETF standard and carries no standards-track status.
Read this RFC
The canonical text of RFC 9371 is hosted at rfc-editor.org. Available in HTML,TXT,PDF,XML.
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