Registration Procedures for Private Enterprise Numbers (PENs)

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Last updated 2020-04-27 (latest revision 2019-10-25)
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This Internet-Draft is no longer active. A copy of the expired Internet-Draft can be found at


This document describes how Private Enterprise Numbers (PENs) are registered by IANA. It shows how to request a new PEN and how to request an update to a current PEN. It also gives a brief overview of PEN uses.


Amanda Baber (
Paul Hoffman (

(Note: The e-mail addresses provided for the authors of this Internet-Draft may no longer be valid.)