Private Enterprise Number
Private Enterprise Numbers (PENs) are created and maintained by the
IANA) in a public registry. The registry includes the name of the assignee, a publicly-displayed email address, and a "contact name." Any organization or individual may request, at no cost, a Private Enterprise Number (PEN) assignment. Requirements are documented in the request form and in RFC 9371
. All registration requests are reviewed manually.
Enterprise numbers are commonly used in the
Vendor-specific attributes, PFCP Vendor Specific IEs and in syslog structured data (RFC 5424
).