Reminder--Retirement of ARIN Non-Authenticated IRR on 31 March 2022

Posted: Monday, 03 January 2022

This announcement is to remind you of the previously-announced retirement of the ARIN non-authenticated Internet Routing Registry (IRR) on 31 March 2022. The following information is repeated from the initial announcement:

ARIN has been engaged in a multi-year project to create and deploy a new and improved Internet Routing Registry (IRR). As a result of these efforts, ARIN now provides users with the ability to create, update, and delete objects in ARIN’s authenticated IRR database using ARIN Online or ARIN’s RESTful API. Unfortunately, use of ARIN’s previous non-authenticated email-based IRR service actually increased after ARIN released its authenticated IRR, in opposition to the outcome ARIN anticipated when improving its IRR.

On 8 February 2021, ARIN held a consultation to solicit input on the retirement of ARIN’s non-authenticated email-based IRR service. This retirement was originally scheduled for 30 September 2021. Based on community input, the proposed date for the ARIN-NONAUTH retirement was delayed to 31 March 2022 to allow more transition time for users. We also notified by email Points of Contact (POCs) of organizations who have objects in the ARIN-NONAUTH database of the retirement date and offered them our assistance with the transition.

This announcement serves as a reminder that ARIN will retire its ARIN-NONAUTH IRR database on 31 March 2022. After this date, users will no longer be able to create, update, or delete records in the ARIN-NONAUTH database, and the ARIN-NONAUTH data stream will no longer be available in Near Real Time Mirroring (NRTM) or via FTP or Whois Port 43.

If you have questions about this transition or need assistance, you can contact us by:

  • submitting an Ask ARIN ticket or chat with us using your ARIN Online account
  • emailing the Routing Security Team at
  • contacting the Registration Services Help Desk by phone Monday through Friday, 7:00 AM to 7:00 PM ET at +1.703.227.0660


Brad Gorman
Senior Product Owner, Routing Security
American Registry for Internet Numbers (ARIN)