Private Enterprise Number (PEN) practices and Internet Assigned Numbers Authority (IANA) considerations for registration procedures

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Last updated 2012-12-31 (latest revision 2012-06-29)
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Private Enterprise Numbers (PENs), are assigned as part of the technical protocol parameters and are frequently used in the management of network connected equipment or software via SNMP-based network management systems, LDAP, DIAMETER or GSS-API. This document discusses what a Private Enterprise Number (PEN) is, common uses and registration procedures for IANA Considerations. The registration procedures include instructions and requirement for obtaining a new Private Enterprise Number, modification to existing numbers and removal of existing numbers.


Pearl Liang (
Alexey Melnikov (

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