Any correspondence concerning this registry should be sent to firstname.lastname@example.org.
Explore repositories in Google Maps using Repository66.
If you're looking for the "rawlist" listing that was available in the previous version of ROAR you can find an approximation here: http://roar.eprints.org/rawlist.txt. The complete records in XML can be downloaded from http://roar.eprints.org/rawlist.xml.
You can download the schema for EP3 XML here: http://roar.eprints.org/cgi/schema.
Registry of Open Access Repositories supports OAI 2.0 with a base URL of http://roar.eprints.org/cgi/oai2