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Introduced | 31 July 1989 |
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TLD type | Country code top-level domain |
Status | Active |
Registry | TWNIC |
Sponsor | TWNIC |
Intended use | Entities connected with ![]() |
Actual use | Popular in Taiwan |
Registration restrictions | Requirements vary depending on which second-level name registration is within; foreigners allowed in several categories |
Structure | Registrations are at second level or at third level beneath some second-level labels |
Documents | Guidelines for administration of domain name registration |
Dispute policies | Taiwan Network Information Center Domain Name Dispute Resolution Policy |
DNSSEC | yes |
Registry website | TWNIC |
.tw is the Internet country code top-level domain (ccTLD) for Taiwan. The domain name is based on the ISO 3166-1 alpha-2 country code TW. The registry is maintained by the Taiwan Network Information Center (TWNIC), a Taiwanese non-profit organization appointed by the National Communications Commission (NCC) and the Ministry of Transportation and Communication. Since 1 March 2001, TWNIC has stopped allowing itself to sign up new domain names directly, instead allowing new registration through its contracted reseller registrars. As of May 2023[update], there are 17 registrars.[1]
ICANN assigned two Internationalized country code top-level domains (IDN ccTLDs) for Taiwan on 25 June 2010:[2]
Presently in November 2019, and since at least November 2015 ("IETF dnsop WG mailing list".), the simplified suffix is a DNAME alias for the traditional suffix. As a result any subdomain of the traditional xn--kpry57d TLD automatically has a CNAME alias from the simplified xn--kprw13d TLD. The traditional suffix is in active use.
Registrations under .tw are possible in second-level space or under various domains as third-level domains:
Domain names in Chinese characters may also be registered at the second level. Furthermore, any registrant of a standard domain name who has chosen a domestic registrar may automatically get two more domain names in Chinese characters in the following second-level domains: 網路.tw, 組織.tw and 商業.tw. These second-level domains correspond to net.tw, org.tw and com.tw, respectively.
As of March 2017, around 8.31% of the .tw domains are served via secured HTTPS protocol, with the cPanel, Inc. Certification Authority being the most popular SSL certificate.[3] Apache is the most popular web server, serving 47.60% of the .tw domains, followed by Microsoft-IIS serving 20.31% of the total .tw domains.[3]