View source for .tw

{{short description|Internet country-code top-level domain for Taiwan}}
{{more citations needed|date=July 2017}}
{{Infobox Top level domain
|name=.tw
|image=Dottw logo.png
|introduced=31 July 1989
|type=[[Country code top-level domain]]
|status=Active
|registry=TWNIC
|sponsor=TWNIC
|intendeduse=Entities connected with [[Taiwan]]
|actualuse=Popular in Taiwan
|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
|document=[https://www.twnic.tw/en_dnservice_giuldlines.php Guidelines for administration of domain name registration]
|disputepolicy=[https://www.twnic.tw/en_dnservice_policy-1.php Taiwan Network Information Center Domain Name Dispute Resolution Policy]|website={{URL|https://twnic.tw}}
|dnssec=yes|image_size=150px}}
[[File:.tw domain.png|thumb|Old logo used to represent the domain|170x170px]]
'''.tw''' is the [[Internet]] [[country code]] [[top-level domain]] ([[ccTLD]]) for the [[Republic of China]], commonly known as Taiwan. The domain name is based on the [[ISO 3166-1 alpha-2]] country code [[ISO 3166-2:TW|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 Communications (Taiwan)|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|2023|5}}, there are 17 registrars.<ref>{{Cite web |url=https://www.twnic.tw/en_dnservice_company.php |title=Registrars |language=en |accessdate=2023-05-30}}</ref>

==Domains==
{{mono|.tw}} domain names can be registered at both the second and third level. Applicants are required to provide an email address for verification. 

=== Open registration ===

*{{mono|tw}} : intended for general use
*{{mono|club.tw}} : intended for clubs or groups
*{{mono|com.tw}} : intended for commercial entities
*{{mono|ebiz.tw}} : intended for online business-related content
*{{mono|game.tw}} : intended for gaming-related content
*{{mono|idv.tw}} : intended for individuals

=== Eligibility expected ===
* {{mono|edu.tw}} : for educational and academic institutions
* {{mono|gov.tw}} : for authorities of Taiwan
* {{mono|mil.tw}} : for the military of Taiwan
* {{mono|net.tw}} : for network or telecommunications license holders
* {{mono|org.tw}} : for non-profit organizations, domestic or overseas

== Statistics ==

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.<ref name=":0">{{Cite web|url=https://www.taiwio.com/tai-wan-de-wang-lu-shu-ju-tong-ji|title=台灣的網路數據統計 taiwio.com|website=www.taiwio.com|language=zh-TW|access-date=2017-03-01|archive-url=https://web.archive.org/web/20170302113445/https://www.taiwio.com/tai-wan-de-wang-lu-shu-ju-tong-ji|archive-date=2017-03-02|url-status=dead}}</ref> [[Apache HTTP Server|Apache]] is the most popular web server, serving 47.60% of the .tw domains, followed by [[Internet Information Services|Microsoft-IIS]] serving 20.31% of the total .tw domains.<ref name=":0" />

==Internationalized domains==
Domain names in [[Chinese character]]s 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 domain]]s: {{lang|zh-TW|網路}}.tw, {{lang|zh-TW|組織}}.tw and {{lang|zh-TW|商業}}.tw. These second-level domains correspond to {{mono|net.tw}}, {{mono|org.tw}} and {{mono|com.tw}}, respectively.

[[ICANN]] assigned two [[Internationalized domain name|internationalized country code top-level domains]] (IDN ccTLDs) for Taiwan on 25 June 2010:<ref>{{cite web |date=25 June 2010 |title=ICANN Board Meeting Minutes |url=https://archive.icann.org/en/meetings/brussels2010/bitcache/Meeting%20of%20the%20ICANN%20Board-vid=13491&disposition=attachment&op=download.txt |url-status=live |archive-url=https://web.archive.org/web/20100707121158/http://brussels38.icann.org/meetings/brussels2010/transcript-board-25jun10-en.txt |archive-date=7 July 2010 |access-date=25 June 2010 <!--Added by DASHBot--> |publisher=ICANN}}</ref>

*  {{lang|zh-hant|.台灣}} : ''Taiwan'' in [[traditional Chinese characters]] (DNS name: .xn--kpry57d)
*  {{lang|zh-hans|.台湾}} : ''Taiwan'' in [[simplified Chinese characters]] (DNS name: .xn--kprw13d)
Since at least November 2015,<ref>{{cite web |title=IETF dnsop WG mailing list |url=https://mailarchive.ietf.org/arch/msg/dnsop/adrEUoWPq1EoxonkvcCJCnEkcFg}}</ref> 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.

== See also ==
{{Portal|Internet|Taiwan}}
*[[.cn]] ([[China]])
* [[.jp]] ([[Japan]])
* [[.kr]] ([[South Korea]])

== References ==
{{Reflist}}

==External links==
* [https://whois.twnic.tw/ .TW Whois Service]
* [https://www.iana.org/domains/root/db/tw.html IANA .tw whois information]
* [https://web.archive.org/web/20051226034536/http://www.twnic.net.tw/english/dn/dn_03.htm List of registrars accredited by TWNIC]
* [https://web.archive.org/web/20051214060519/http://www.neulevel.com.tw/content/tw_how.html List of registrars accredited by Neulevel]

{{CcTLD}}

{{DEFAULTSORT:TW}}
[[Category:Country code top-level domains]]
[[Category:Telecommunications in Taiwan]]
[[Category:Internet in Taiwan]]
[[Category:1989 establishments in Taiwan]]
[[Category:Internet properties established in 1989]]

[[sv:Toppdomän#T]]