May 18, 2022

New From CrossRef: Find the Registration Agency for Any DOI With New API

The following new API is available for CrossRef members, affiliates, and general public.

From the CrossRef Blog:

CrossRef has released a new Application Programming Interface (API) tool to allow anyone to look up the Registration Agency (RA) for a given DOI or a group of DOIs. CrossRef is not the only organization that assigns DOIs, and each RA provides different services. For example CrossRef’s services include reference linking and discovery services for scholarly documents. Until now it has been difficult to associate a particular DOI with the correct RA.

To find the registration agency, simply add “”” before any DOI in your browser address bar or program.

Read the Complete CrossRef Blog Post for Examples and Additional Info

About Gary Price

Gary Price ( is a librarian, writer, consultant, and frequent conference speaker based in the Washington D.C. metro area. Before launching INFOdocket, Price and Shirl Kennedy were the founders and senior editors at ResourceShelf and DocuTicker for 10 years. From 2006-2009 he was Director of Online Information Services at, and is currently a contributing editor at Search Engine Land.