Are there any restrictions to register a .CO.TH domain?

No, registration is completely unrestricted. Anyone can register a .CO.TH domain on a first-come, first-served basis.

Does .CO.TH support localized characters (IDN)?

No, only standard alphanumeric English characters (a-z, 0-9) and hyphens are supported.

What is the character length limit for .CO.TH?

A .CO.TH domain name must be between 2 and 63 characters long.

Domain Extension Guide

.CO.TH Domain Registration & WHOIS

Analyze registry operators, character limits, IDN support status, and specific registration guidelines for .CO.TH domains.

Extension Metadata

Min 2 Chr

Max 63 Chr

IDN NO

Category: country

Operator: THNIC

Registration Eligibility

This extension is open to any individual or business globally without strict regulatory constraint policies.

Overview & Registration Guidelines

The .CO.TH domain extension is Thailand's highly restricted commercial second-level domain, managed by the THNIC Foundation. Registration requires a valid business registration in Thailand, a matching corporate name, or a trademark registered in Thailand. THNIC enforces a strict policy of allowing only one domain per trademark or business entity, making .co.th an exclusive, exceptionally secure, and highly trusted namespace for Thai businesses and consumers. It requires a minimum label length of 2 characters and supports up to 63 characters. It does not support IDN characters, meaning only standard English characters are allowed. Registration is completely open and unrestricted globally to individuals and organizations.

To search for who owns a specific domain registered under this extension, you can perform a live query in our WHOIS portal above. The registry operator database will respond in real time with server details, domain status codes, registration/expiry dates, and name server arrays.

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.CO.TH Domain Registration & WHOIS

Extension Metadata

Registration Eligibility

Overview & Registration Guidelines

Frequently Asked Questions