RDAP Web Client

A simple single-page RDAP client running entirely in your browser.

Launch the RDAP Web Client

>>> Click here for the RDAP deployment dashboard! <<<

The Registration Data Access Protocol (RDAP) is the successor to WHOIS. Like WHOIS, RDAP provides access to information about Internet resources (domain names, autonomous systems, and IP addresses). Unlike WHOIS, RDAP provides:

RDAP.org aims to support users and developers of RDAP clients by providing a "bootstrap server", i.e. single end point for RDAP queries. RDAP.org aggregates information about all known RDAP servers. RDAP clients can send RDAP queries to RDAP.org, which will then redirect requests to the appropriate RDAP service.

How To Use RDAP.org

Client Implementers

If you are developing an RDAP client, configure it to send HTTP requests to https://rdap.org/<type>/<object>, where <type> is the object type (one of domain, ip, autnum etc) and <object> is the object identifier (eg example.com,, 64496, etc).

HTTP Status Codes

Rate Limits

RDAP.org will return a 429 response if you send more than 600 requests in a rolling 300-second (5 minute) window. So you need to stay below 5 queries per second to avoid this limit.

If you are interested in doing high-volume data mining of registration data, please (a) don’t, but if you must, (b) consume the IANA registries directly. Net::RDAP::Registry, which is part of Net::RDAP, provides a simple interface to these registries.

Additional Resources


Privacy Considerations

If you use RDAP.org to perform RDAP queries, your queries will be logged, alongside your IP address. These logs are not disclosed to anyone and are deleted within a few days. RDAP.org will not set any cookies in your browser.

Submit Feedback

If you would like to submit feedback please click here.

About RDAP.org

RDAP.org is maintained by Gavin Brown.

You can review the code which RDAP.org uses on GitHub.

Supporting RDAP.ORG

If your organisation depends on RDAP.org, then please consider supporting it, since it's not free to operate and requires ongoing maintenance and management.

If youd would like to support this service, please email [email protected] to dicuss options.