ARIN Implements PGP for Template Transactions

Posted: Thu, 13 Sep 2007

ARIN has implemented PGP (Pretty Good Privacy) as a method to secure template transactions sent to ARIN when managing Internet number resources. This is in response to a 14 June 2007 directive from the Board of Trustees.

Cryptographic signing enables more secure communication between ARIN and its customers. In addition to PGP, ARIN offers X.509 certificates as a method of cryptographic authentication. A wide variety of mail and signing software exists; ARIN encourages its customers to examine their mail software for PGP and X.509 support. While there are a few known issues with some mail user agent (MUA) implementations of PGP and X.509 standards, ARIN will work with its customers to provide additional processing support when needed.

ARIN will also continue to support Mail-From as an authentication method, though it is not as secure as digitally signed transactions.

For more details on cryptographic authentication at ARIN, including information on using PGP and X.509 certificates with ARIN, please visit:

If you have any questions regarding PGP or X.509 certificates, please contact Registration Services at or +1.703.227.0660.


Raymond A. Plzak
President and CEO
American Registry for Internet Numbers (ARIN)