.co.th
Last checked 2026-08-19Purpose: Commercial second level, the standard identity for a Thai company.
Eligibility: Restricted and name-matched. The applicant must hold a trademark, service mark, certification mark or collective mark, and the domain must exactly match the registered mark. Thai Department of Intellectual Property registrations get first priority; foreign marks require a Thai representative office or a power of attorney.
None of the registrars we track sell .co.th at retail — it's available only through registry-accredited registrars (see Local registry and rules above for the official list).
The THNIC Foundation assigns T.H.NIC Company Limited to handle applications across the seven categories under .th and .ไทย. The exact-match rule is the constraint most foreign applicants underestimate.