Whois lookup
See whether a domain is registered, and its registrar, creation and expiry dates, status and name servers, from the registry’s RDAP or Whois service.
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What you enter is sent to this site’s server, which looks it up or connects to it for you. Only public addresses can be checked; queries and results are not stored.
About this tool
See whether a domain is registered and, if it is, its registrar, creation, expiry and update dates, status codes, name servers and DNSSEC. Use it before buying a domain, to check when your own domain expires, to confirm a transfer lock, or to see which DNS servers a domain uses after a change.
Data comes from the registry’s RDAP service, found through IANA’s list, while .cn, .中国, .hk, .tw and .jp use classic Whois. The full registry response can be opened and copied. Many registries hide the owner’s name and contacts. The domain is sent to this site’s server, which queries the registry; queries and results are not stored.
How to use it
- Enter the “Domain”, such as example.com. A leading www. is removed for you.
- Select “Look up”.
- See whether the domain is registered, then read the registrar, dates, days until expiry, name servers, DNSSEC, status and source.
- Open “Registry response” to see the raw answer and “Copy” it.
Common questions
Why can’t I see the owner’s name or email?
Many registries and registrars hide the registrant’s name and contact details for privacy. The tool shows only what the registry returns, which you can check under “Registry response”.
Why does a subdomain show as not registered?
Registries only hold registered domains, such as example.com, not subdomains like blog.example.com. Enter the registered domain; only a leading www. is removed automatically.
What do statuses such as clientTransferProhibited mean?
They are standard domain status codes. clientTransferProhibited and clientDeleteProhibited mean the registrar has locked the domain against transfer or deletion, which is common; serverHold or clientHold mean the domain has been taken out of DNS.
What is the difference between RDAP and Whois?
RDAP is the newer, structured service that registries answer over HTTPS; classic Whois returns plain text on port 43. The tool tries RDAP first and uses Whois for registries without it, and “Source” shows which one answered.
Why does it say no registry lookup service was found?
Some domain suffixes have neither an RDAP service nor a Whois server in IANA’s records, so there is nothing to ask. Look the domain up on that registry’s own website instead.
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