ARIN RDAP Bootstrap Server URL Change Completed

Posted: Thursday, 01 July 2021

This announcement is to notify you that the previously-scheduled work on the RDAP bootstrap server URL has been completed. ARIN has changed the address of our Registration Data Access Protocol (RDAP) bootstrap server from to Although ARIN has set up a redirect to automatically route queries from the old URL to the new URL, it is important to note we can’t guarantee the redirect will be respected by all clients. In order to avoid any problems, queries should be changed to use the new URL,

For more information, visit:

If you have questions or comments about this change, please submit an Ask ARIN ticket using your ARIN Online account, or contact the Registration Services Help Desk by phone Monday through Friday, 7:00 AM to 7:00 PM ET at +1.703.227.0660.


Mark Kosters
Chief Technology Officer
American Registry for Internet Numbers (ARIN)