How to use the WHOIS Lookup
This tool uses RDAP, the modern replacement for WHOIS run by domain registries, so the data comes straight from the source. Owner contact details are usually hidden for privacy (GDPR and WHOIS privacy services).
Frequently asked questions
How do I know if a domain is available?
If the lookup returns 'not found', the domain is very likely unregistered. Check with a registrar to be sure.
What does clientTransferProhibited mean?
A registrar lock that prevents unauthorized transfers. It's normal and recommended.