Domain checker
Check if a domain is free, who registered it, when it expires, and its DNS records
About Domain checker
Type a domain (or paste a whole website link). Registration data comes from each registry's RDAP service — the modern replacement for WHOIS — with WHOIS used for extensions that don't support RDAP yet, such as .th. You'll see whether the domain is free, the registrar, creation and expiry dates and name servers.
DNS records show where the domain points (A/AAAA), who handles its email (MX) and its verification records (TXT) — useful before buying a domain, to watch your own expiry date, or to troubleshoot websites and email.
Each check queries outside servers, so there's a daily quota: a few for guests, more for free members and unlimited for supporters.
FAQ
It says available — can I definitely register it?
Usually, but some names are reserved or in an expiry grace period. Check with a registrar before paying.
Why can't I see the owner's name?
Most registrars hide owners' personal details for privacy; you'll see the registrar only.
Does it work for .co.th?
Yes, including .in.th, .ac.th and the Thai-script .thai domain, via THNIC's WHOIS.
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