Check .CO.TH availability for a Thailand-facing business, prepare the required company, VAT, trademark, or agent documents, search names in bulk, or manage an eligible transfer.
Need lower .CO.TH pricing? Upgrade account level for bulk registration and reseller pricing.
.CO.TH is a business-focused category in Thailand’s .TH domain system. NiceNIC supports search, registration management, eligible transfers, bulk workflows, and reseller services while customers prepare the entity, VAT, trademark, or authorized-agent documents required by THNIC.
Add funds and pay for domain services using supported crypto options such as USDT, BTC, ETH, and LTC. Automated crypto deposit recording helps account balances update quickly after successful confirmation, with no extra NiceNIC processing fee for automated deposits.
NiceNIC provides real human support, not only scripted replies. Our team can review your domain needs, explain practical options, and give account-level, transfer, bulk registration, and reseller suggestions to help your domain business grow.
NiceNIC does not take arbitrary action against domains. Abuse reports are reviewed based on available evidence, policies, and registry requirements, with domain owners guided to review, fix, or explain reported issues where appropriate.
Manage .CO.TH together with 2,500+ domain extensions from one NiceNIC account, including country-code, generic, and new domain extensions. This helps businesses, investors, and resellers build global domain coverage more efficiently.
NiceNIC supports 47+ website languages, creating a multilingual registrar experience for international users and teams. This makes domain registration, renewal, transfer, account management, and support easier across different markets.
For hosting providers, agencies, platforms, and domain resellers, NiceNIC supports reseller API access for domain registration, renewal, transfer, DNS, account-level pricing, and custom nameserver services.
THNIC’s official statistics show 49,485 .CO.TH domains as of August 11, 2026, up from 48,573 at the end of 2025. The category is specifically designed for qualifying business entities and trademark-based registrations connected to Thailand.
THNIC reported 49,485 .CO.TH domains as of August 11, 2026.
THNIC defines .CO.TH for qualifying business entities, state enterprises, and trademark routes.
Thai Network Information Center Foundation manages Thailand’s .TH domain system.
.CO.TH is small compared with the global domain market, but nearly 50K active names make it a meaningful local business namespace. Its value is strongest for companies and trademark owners that want a recognizable Thailand-facing address.
A documented Thailand business category for companies and trademark owners that can meet THNIC’s eligibility and naming rules.
THNIC requires the applicant to qualify through a business, VAT, state-enterprise, trademark, or authorized-agent route.
.CO.TH names are tied to the organization, project, or trademark basis used for the application, helping keep the namespace business-focused.
Foreign juristic persons and foreign trademark owners can use a qualifying Thailand-based authorized representative and the required supporting documents.
.CO.TH continues to maintain a strong base among Thai businesses, with registrations rising to 49,485 by August 2026.
Because .CO.TH registration is tied to a qualifying business or trademark basis, the best premium choice is usually a name that clearly supports the company, project, or mark being registered. Short, recognizable names are easier to use across Thai business websites, email, and campaigns.
Match registration, transfer, DNS, bulk management, and reseller tools to the way you plan to use .CO.TH.
Use .CO.TH when the domain should match a company or business identity supported by Thai registration records.
Use the trademark route when the requested domain is based on a mark accepted under THNIC rules.
Use a qualifying Thailand-based authorized representative and prepare the required foreign-company or trademark documents.
Build document collection into the workflow before submitting multiple .CO.TH orders.
If you already own .CO.TH domains elsewhere, transfer decisions should not be based only on one renewal invoice. Check transfer eligibility, ownership access, billing reliability, support response time, API needs, and long-term domain management.
Paste multiple .CO.TH names, remove duplicates, review the count, and continue to bulk registration. This is useful for domain investors, brand teams, agencies, hosting providers, and resellers.
Enter one name per line, with or without .CO.TH. The tool removes duplicates and prepares a clean list for bulk registration.
If your business sells hosting, websites, SaaS, agency services, or brand protection packages, NiceNIC reseller APIs can support domain registration, renewal, transfer, DNS, and account management.
# NiceNIC API v2 endpoint
# Applies to supported domain extensions, including .com, .net, .org, ccTLDs, and new gTLDs
https://api.nicenic.net/v2/
# Required headers
Authorization: username:api_secret
Content-Type: application/json
# Check domain availability across multiple extensions
curl "https://api.nicenic.net/v2/?category=domain&action=check&domains=example.com,example.net,mybrand.org" \
-H "Authorization: username:api_secret" \
-H "Content-Type: application/json"
# Get registration / renewal / transfer pricing for any supported extension
curl "https://api.nicenic.net/v2/?category=domain&action=get_price&domain=example.com&type=register&year=1" \
-H "Authorization: username:api_secret" \
-H "Content-Type: application/json"
# Change the domain value to query another TLD:
# example.com, example.net, example.org, example.ai, example.co
# Standard response format
{
"code": 0,
"msg": "success",
"data": {}
}
Check the registry identity, eligibility, documents, naming rules, DNS or transfer steps, and management options that matter for a .CO.TH registration.
.CO.TH is the business category within Thailand’s .TH country-code domain. THNIC designed it for qualifying business entities, state enterprises, trademark owners, and approved foreign-company or foreign-trademark routes.
Thai Network Information Center Foundation manages the .TH country-code domain framework, while T.H.NIC Co., Ltd. provides registration services and publishes .TH registration statistics and guidance.
THNIC’s policy includes juristic entities registered with Thailand’s Department of Business Development, VAT-registered persons or entities, state enterprises, Thailand-registered trademark owners, and eligible foreign applicants using a qualifying authorized representative in Thailand.
Depending on the eligibility route, THNIC guidance calls for business registration or affidavit records, VAT registration, trademark registration, or foreign-company and agent documents. Prepare the documents that match the basis for the requested domain.
Yes, THNIC provides a route for foreign juristic persons or foreign trademark owners that appoint a qualifying business entity in Thailand as an authorized representative and submit the required authorization and supporting documents.
Not necessarily. THNIC naming rules tie many .CO.TH requests to the organization name, an accepted abbreviation, project basis, or trademark used for eligibility. A trademark-based domain must follow the applicable mark-matching rules.
THNIC’s policy allows annual renewal from a minimum of one year up to a maximum of ten years. Keep the eligibility and holder information current throughout the domain lifecycle.
Domain ownership changes are restricted to defined cases under THNIC policy, while registrar or account-management changes should follow the current service process. Start with the NiceNIC transfer page so the applicable route can be checked before changes are made.
Yes. Use the bulk domain workflow and reseller API v2 for supported operations, but collect the THNIC eligibility and supporting documents for each registrant before submission.
Register a new .CO.TH, transfer an existing domain, or upgrade your account level for bulk registration and reseller API use.
