Products RDAP API RDAP API Documentation for the Google Domains RDAP API. For more information about this API, see the Reference section. See also the specification for RDAP. Except as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. For details, see our Site Policies. Java is a registered trademark of Oracle and/or its affiliates. Last updated August 22, 2019.