The API interface complies with the behavior stated in the RDAP's RFCs:
This implementation conforms to the RDAP Operational Profile for gTLD Registries and Registrars version 1.0. You can query for Domains, Nameservers, and Entities (Registrar objects). Querying for Contact objects is not supported.
Queries can be done for an exact match when the resource is specified directly in the URL. For example, to query for domain names, point the RESTful client to: /rdap/domain/example.com where example.com is the TLD to query.
Queries can also be done using the asterisk as the wildcard character to match zero or more trailing characters. For example, a domain search by name:/rdap/domains?name=exam*.com will return results for the domain names exam.com, exams.com, example.com, etc.
The only content-type supported in our responses is application/rdap+json. If an RDAP client sends the Accept header in its request we will ignore it.
You are not authorized to access or query our Whois database through the use of electronic processes that are high-volume and automated. Whois database is provided by KFH Registry.
KFH Registry makes every effort to maintain the completeness and accuracy of the Whois data, but cannot guarantee that the results are error-free. Therefore, any data provided through the Whois service are on an "as is" basis without any warranties. BY USING THE WHOIS SERVICE AND THE DATA CONTAINED HEREIN OR IN ANY REPORT GENERATED WITH RESPECT THERETO, IT IS ACCEPTED THAT KFH REGISTRY IS NOT LIABLE FOR ANY DAMAGES OF ANY KIND ARISING OUT OF, OR IN CONNECTION WITH, THE REPORT OR THE INFORMATION PROVIDED BY THE WHOIS SERVICE, NOR OMISSIONS OR MISSING INFORMATION. THE RESULTS OF ANY WHOIS REPORT OR INFORMATION PROVIDED BY THE WHOIS SERVICE CANNOT BE RELIED UPON IN CONTEMPLATION OF LEGAL PROCEEDINGS WITHOUT FURTHER VERIFICATION, NOR DO SUCH RESULTS CONSTITUTE A LEGAL OPINION. Acceptance of the results of the Whois constitutes acceptance of these terms, conditions and limitations. Whois data may be requested only for lawful purposes, in particular, to protect legal rights and obligations. Illegitimate uses of Whois data include, but are not limited to, unsolicited email, data mining, direct marketing or any other improper purpose. Any request made for Whois data will be documented by KFH Registry but will not be used for any commercial purpose whatsoever.
NOTE: FAILURE TO LOCATE A RECORD IN THE WHOIS DATABASE IS NOT INDICATIVE OF THE AVAILABILITY OF A DOMAIN NAME.
For more information on Whois status codes, please visit https://icann.org/epp
You can learn more about Whois by reading ICANN's educational and policy materials, available at https://whois.icann.org.