What is .ไทย?
IANA delegated .ไทย on August 17, 2010, as part of the effort to let people use domain names entirely in their own script.
A little context on Thailand: the capital is Bangkok, the main language is Thai, the currency is the Thai baht (THB) and the international dialing code is +66.
Next door on the map, you'll find .mm for Myanmar, .kh for Cambodia, .la for Laos and .my for Malaysia.
IANA lists Thai Network Information Center Foundation as the manager of .ไทย, with an address in Thailand. The registry's website is http://www.thnic.co.th. ccTLD managers set their own policies — who can register, which second-level names exist, pricing to registrars — so those rules differ from country to country.
Under the hood, the root zone points to 5 name servers for .ไทย, 4 of them reachable over IPv6. The delegation is DNSSEC-signed, so resolvers can verify that answers for .ไทย haven't been tampered with on the way. Registration data is published over RDAP and WHOIS (the WHOIS server is whois.thnic.co.th).
Thailand also has another country-code domain in the root zone: .th.
Same registry, other endings
1 other TLD shares this operator.
.ไทย FAQ
What country is .ไทย?
.ไทย is the country-code top-level domain for Thailand, in South-Eastern Asia.
Who owns the .ไทย domain?
IANA lists Thai Network Information Center Foundation as the manager of .ไทย: it runs the registry and sets the rules for Thailand's ccTLD. Individual .ไทย names belong to whoever registers them.
Can I register a .ไทย domain from the US?
It depends on Thai Network Information Center Foundation's policy. Some ccTLDs are open to anyone in the world, while others require a local address, company or trademark. Check the registry (http://www.thnic.co.th) or an accredited registrar before you buy.
Is .ไทย DNSSEC-signed?
Yes. The root zone has a DS record for .ไทย, so DNSSEC validation works all the way down from the root.
How is .ไทย written in the DNS?
As the ASCII "A-label" xn--o3cw4h. Browsers convert it back to .ไทย for display.
How do I look up who owns a .ไทย domain?
Query the registry's registration data service: the WHOIS server is whois.thnic.co.th, and RDAP lookups go to https://rdap.thains.co.th/. Many registrants use privacy services, so personal details may be hidden.
Sources
Data from IANA root zone version 2026102000. Last changed January 23, 2025. Spotted something wrong? Tell us.
