FINAL REMINDER - Origin AS field depreciation in one month (was: [arin-announce] Autonomous System Originations (Origin AS) Will Be Retired on 28 July)

[John Curran via NANOG <nanog () lists nanog org>]

NANOGers -

If you are using the Origin AS field, please update your systems immediately.

Thanks!
/John

John Curran
President and CEO
American Registry for Internet Numbers


Begin forwarded message:

From: ARIN <info () arin net>
Subject: [arin-announce] Autonomous System Originations (Origin AS) Will Be Retired on 28 July
Date: June 30, 2025 at 11:26:27 AM EDT
To: "arin-announce () arin net" <arin-announce () arin net>

This is the final reminder that the Origin Autonomous System (Origin AS) field will be officially removed from the ARIN 
database on 28 July. This change follows the ARIN Board of Trustees’ July 2023 adoption of policy ARIN-2021-8, which 
called for the deprecation of the ‘Autonomous System Originations’ field.

We recommend any customers who query the Origin AS database for routing security or operational purposes to transition 
to a more modern and secure alternative such as Resource Public Key Infrastructure (RPKI) or the Internet Routing 
Registry (IRR). These tools provide more reliable and secure options for managing and verifying routing information.

For help with this transition, please contact our Registration Services Help Desk for guidance by using the “Ask ARIN” 
feature in your ARIN Online account, or call +1 703.227.0660, Monday-Friday, 7:00 AM-7:00 PM ET.

Regards,

American Registry for Internet Numbers (ARIN)


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