Original top-level domains[edit]
Seven generic top-level domains were created early in the development of the Internet, and pre-date the creation of ICANN in 1998.[2]
- Name: DNS name
- Entity: intended use
- Notes: general remarks
- IDN: support for internationalized domain names (IDN)
- DNSSEC: presence of DS records for Domain Name System Security Extensions
Name | Entity | Administrator[3] | Notes | IDN | DNSSEC |
---|---|---|---|---|---|
.com | commercial | Verisign | This is an open TLD; any person or entity is permitted to register. Though originally intended for use by for-profit business entities, for a number of reasons it became the "main" TLD for domain names and is currently used by all types of entities including nonprofits, schools and private individuals. Domain name registrations may be successfully challenged if the holder cannot prove an outside relation justifying reservation of the name, to prevent "squatting". It was originally administered by the United States Department of Defense. | Yes | Yes |
.org | organization | Public Interest Registry | This is an open TLD; any person or entity is permitted to register. Originally intended for use by non-profit organizations, and still primarily used by some. | Yes | Yes |
.net | network | Verisign | This is an open TLD; any person or entity is permitted to register. Originally intended for use by domains pointing to a distributed network of computers, or "umbrella" sites that act as the portal to a set of smaller websites. | Yes | Yes |
.int | international organizations | Internet Assigned Numbers Authority | The .int TLD is strictly limited to organizations, offices, and programs which are endorsed by a treaty between two or morenations. However, there are a few grandfathered domain names that do not meet these criteria. | No | No |
.edu | U.S. higher education | Educause (viaVerisign) | The .edu TLD is limited to specific educational institutions such as, but not limited to, primary schools, middle schools, secondary schools, colleges, and universities. In the US, its usability was limited in 2001 to post-secondary institutions accredited by an agency on the list of nationally recognized accrediting agencies maintained by the United States Department of Education. This domain is therefore almost exclusively used by American colleges and universities. Some institutions that do not meet the current registration criteria have grandfathered domain names. | No | Yes |
.gov | U.S. national and state government agencies | General Services Administration (viaVerisign) | The .gov TLD is limited to governmental entities and agencies in the U.S. | No | Yes |
.mil | U.S. military | United States Department of Defense | The .mil TLD is limited to use by the United States military. | No | Yes |
Infrastructure top-level domain[edit]
Infrastructure | Entity | Notes | IDN | DNSSEC |
---|---|---|---|---|
.arpa | Address and Routing Parameter Area | Originally assigned to the Advanced Research Projects Agency in the early days on the Internet, .arpa is now exclusively used as an Internet infrastructure TLD. | No | Yes |
Country code top-level domains[edit]
Note: the country code domain system was created in the early days of the Domain Name System, and pre-dates ICANN.
- Name: DNS name of the (ISO 3166-1 alpha-2) two-letter country-code top-level domain
- Entity: country, dependency, or region
- Explanation: explanation of the code when not self-evident from the English name of the country
- Notes: general remarks
- IDN: support for internationalized domain names (IDN)
- DNSSEC: presence of DS records for Domain Name System Security Extensions
- SLD: allows Second-level domain registration (restrictions may apply)
- IPv6: Registry fully supports IPv6 access
Name | Entity | Explanation | Notes | IDN | DNSSEC | SLD | IPv6 |
---|---|---|---|---|---|---|---|
.ac | Commonly used for academic websites, such as universities. However, .ac is not to be confused with the official British academic domain .ac.uk. | Yes | Yes | Yes | Yes | ||
.ad | Local trademark, trade name or citizenship required [4][5] | Yes | Yes | ||||
.ae | No | Yes | |||||
.af | Yes | Yes | |||||
.ag | Also unofficially used by German businesses (where AG is an abbreviation of Aktiengesellschaft, a legal entity form similar to a corporation limited by shares) | Yes | Yes | ||||
.ai | No | Yes | |||||
.al | Citizenship no longer required | No | No | ||||
.am | Also unofficially used by AM radio stations or related business | Yes | Yes | ||||
.an | Local presence required; Netherlands Antilles were dissolved on October 10, 2010; | No | Yes | ||||
.ao | No | Unknown | |||||
.aq | Antarctique | Defined by the Antarctic Treaty as everything south of latitude 60°S. AQ domain names are available to government organizations who are signatories to the Antarctic Treaty and to other registrants who have a physical presence in Antarctica. | No | Yes | |||
.ar | Spanish[cctld 1] | No | No | ||||
.as | No | Yes | |||||
.at | Yes | Yes | |||||
.au | Restrictions apply. In general, registrants must be Australian, and most have a minimum 2 year registration period.[6] Includes Ashmore and Cartier Islands and Coral Sea Islands. | No | No | ||||
.aw | Aruba, West Indies | Restricted to registered Aruban companies, organisations and citizens | No | Yes | |||
.ax | No | Yes | |||||
.az | No | Yes | |||||
.ba | No | Yes | |||||
.bb | No | Yes | |||||
.bd | No | No | |||||
.be | Also unofficially used in the canton of Bern, Switzerland | Yes | Yes | Yes | |||
.bf | No | Yes | |||||
.bg | Cyrillic[citation needed] | Yes | Yes | ||||
.bh | No | Yes | |||||
.bi | No | Yes | |||||
.bj | No | Yes | |||||
.bm | Local corporate registration required | No | Yes | ||||
.bn | No | No | |||||
.bo | No | Yes | |||||
.br | Restricted. Registration is done under several categories (i.e.: .edu.br for higher education institutions, .gov.br for government agencies, etc.)[7] | Yes[8] | Yes | No[cctld 2] | |||
.bs | No | Yes | |||||
.bt | No | No | |||||
.bv | Not in use (Norwegian dependency; see .no). | No | No | No | |||
.bw | No | Yes | |||||
.by | Byelorussia | also unofficially used to denote Bayern (Bavaria), Germany | Yes | Yes | |||
.bz | Yes | Yes | |||||
.ca | Subject to Canadian Presence Requirements. | French[cctld 3] | Yes | Yes | |||
.cc | Australian territory: not to be confused with Cocos islands in Guam. Also used as a free domain service to the public as cc.cc, cu.cc or cz.cc domain. | Yes | Yes | ||||
.cd | No | Yes | |||||
.cf | No | Yes | |||||
.cg | No | Yes | |||||
.ch | Confoederatio Helvetica (Latin) | Yes[cctld 4] | Yes | Yes | |||
.ci | No | Yes | |||||
.ck | No | Yes | |||||
.cl | Yes | Yes | Yes | ||||
.cm | A local entity/company in Cameroon is required to register a domain name. | No | Yes | ||||
.cn | A local company in China is required to register a domain name, or for personal registrations a valid ID copy of PRC. Hong Kong and Macau also maintain TLDs. | Yes | Yes | ||||
.co | Marketed as a global domain – recognized as a gccTLD by Google. Anyone can register. | Yes | Yes | ||||
.cr | Yes | Yes | |||||
.cs | This ccTLD was deleted around January 1995. The ISO 3166-1 alpha-2 code CS was later assigned to Serbia and Montenegro but that country continued to use the ccTLD .yu instead. Serbia and Montenegro split in 2006, with Serbia assigned .rs and Montenegro .me | No | No | ||||
.cu | No | Yes | |||||
.cv | No | Yes | |||||
.cw | Curaçao, West Indies | No | Unknown | ||||
.cx | Yes | Yes | |||||
.cy | No | No | |||||
.cz | No[cctld 5] | Yes | Yes | ||||
.dd | Deutsche Demokratische Republik | Was proposed, but never implemented due to German re-unification. | No | No | |||
.de | Deutschland | German postal address for administrative contact (admin-c) required. Proxy registrations are allowed. | Yes[cctld 6] | Yes | Yes | ||
.dj | No | Yes | |||||
.dk | Yes[cctld 7] | Yes | Yes | ||||
.dm | No | Yes | |||||
.do | No | Yes | |||||
.dz | al-Djaza'er | No | Yes | ||||
.ec | No | Yes | |||||
.ee | Eesti | Anyone can register but local administrative contact is required. | Yes[cctld 8] | Yes | Yes | ||
.eg | No | Yes | |||||
.eh | .eh is reserved for Western Sahara, but does not exist in the root. | No | |||||
.er | Inactive – The domain registrar Eritrea Telecommunication Services Corporation offers no services to register domains. | No | No | ||||
.es | España | No | Yes | ||||
.et | No | No | |||||
.eu | Restricted to legal and natural persons in European Union member states. Previously unofficially used for sites in the Basque language, but now .eus is in official use. | Yes[cctld 9] | Yes | Yes | |||
.fi | Restricted to legal and natural persons residing in Finland. | Yes[cctld 10] | Yes | Yes | |||
.fj | No | Yes | |||||
.fk | No | No | |||||
.fm | Also unofficially used by FM radio stations or related business | No | Yes | ||||
.fo | Føroyar | Yes | Yes | ||||
.fr | Restricted to individuals and companies in European Union, Switzerland, Norway, Iceland and Liechtenstein.[cctld 11] | Yes[cctld 12] | Yes | Yes | |||
.ga | No | Yes | |||||
.gb | Great Britain | Deprecated.[10] The primary ccTLD used for the United Kingdom is .uk. | No | No | |||
.gd | No | Yes | |||||
.ge | Available for registration for residents of Georgia (unlimited) or for foreign companies via representation of any local legal person (one domain name per registrant)[11] | No | No | Yes | |||
.gf | Guyane française | No | |||||
.gg | No | Yes | |||||
.gh | No | No | |||||
.gi | Yes | Yes | |||||
.gl | Previously also unofficially used in Galicia, Spain, but now .gal has been approved for such use, to be implemented in 2014 | Yes | Yes | ||||
.gm | No | Yes | |||||
.gn | A local contact is required | Yes | No | ||||
.gp | Still used for Saint-Barthélemy and Saint-Martin | No | Yes | ||||
.gq | Guinée équatoriale | No | |||||
.gr | Yes[cctld 13] | Yes | Yes | ||||
.gs | Yes | Yes | |||||
.gt | Yes | No | Yes | ||||
.gu | No | No | |||||
.gw | No | Yes | |||||
.gy | No | Yes | |||||
.hk | Special administrative region of the People's Republic of China. | Yes | No | Yes | |||
.hm | No | Yes | |||||
.hn | Yes | Yes | |||||
.hr | Hrvatska | No | Yes | ||||
.ht | Yes | No | Yes | ||||
.hu | Restricted to Hungarian companies, organisations and citizens | No | Yes | ||||
.id | Restricted to Indonesian companies (co.id), organisations (or.id), academic (ac.id & sch.id) and citizens (biz.id, my.id & web.id). Second-level domains are becoming available now and will be open to general registration on August 17, 2014.[12] | Yes | Partial[13] | Yes | |||
.ie | In 2002, registration was expanded to include persons or businesses with a "real and substantive" connection with the island of Ireland (including Northern Ireland).[14][15] | No | No | Yes | |||
.il | Yes | No | No | ||||
.im | No | Yes | |||||
.in | Under INRegistry since April 2005 (except: gov.in, nic.in, mil.in, ac.in, edu.in, res.in). | Yes | Yes | ||||
.io | Used unofficially by technology companies/startups/web applications because IO can be an acronym for input/output which is useful for domain hacks. | Yes | Yes | ||||
.iq | Partial[13] | Yes | |||||
.ir | Yes | No | Yes | ||||
.is | Ísland | Yes | Yes | Yes | |||
.it | Restricted to companies and individuals in the European Union. | Yes[cctld 14] | No | Yes | |||
.je | No | Yes | |||||
.jm | No | No | |||||
.jo | No | Yes | |||||
.jp | Restricted to individuals or companies with a physical address in Japan. | Yes | Yes | ||||
.ke | Yes | No | |||||
.kg | Yes | Yes | |||||
.kh | Khmer, formerKâmpŭchea | No | No | ||||
.ki | Yes | Yes | |||||
.km | Komori | No | Yes | ||||
.kn | No | Yes | |||||
.kp | No | No | |||||
.kr | Yes | Yes | Yes | ||||
.kw | No | No | |||||
.ky | Restricted to qualified Cayman entities[16] | No | Yes | ||||
.kz | No | Yes | |||||
.la | Currently being marketed as the unofficial domain for Los Angeles[17] | Yes | Yes | ||||
.lb | Restricted to registration with a company in Lebanon | Yes | No | ||||
.lc | Yes | Yes | |||||
.li | Also used by Long Island | Yes | Yes | Yes | |||
.lk | Lanka | Yes | Yes | ||||
.lr | Partial[13] | No | |||||
.ls | No | No | |||||
.lt | Yes | Yes | Yes | ||||
.lu | Yes | Yes | Yes | ||||
.lv | Yes | Yes | Yes | ||||
.ly | No | Yes | |||||
.ma | Maroc | Also used as a free domain service to the public as cu.ma | Partial[13] | Yes | |||
.mc | Only for companies with a trademark registered in Monaco | No | Yes | ||||
.md | Restricted to individuals or companies with a physical address in Moldova. | No | Yes | ||||
.me | Yes | Yes | |||||
.mg | No | Yes | |||||
.mh | No | ||||||
.mk | Makedonija | Restricted to registration with a company in Macedonia | No | Yes | |||
.ml | No | Yes | |||||
.mm | Yes | No | |||||
.mn | The second-level domains '.gov.mn', '.org.mn', and '.edu.mn' are reserved for special use. See .mn for more information. | Yes | Yes | ||||
.mo | Macao | Special administrative region of the People's Republic of China. Registrants must have a registered business in Macau, with the same name as the domain they wish to register.[18] | No | Yes | |||
.mp | No | Yes | |||||
.mq | No | No | |||||
.mr | No | Yes | |||||
.ms | No | Yes | |||||
.mt | No | No | |||||
.mu | No | Yes | |||||
.mv | No | Yes | |||||
.mw | No | Yes | |||||
.mx | No | Yes | |||||
.my | Restricted to registration by an individual or company in Malaysia | Yes[cctld 15] | Yes | Yes | |||
.mz | No | No | |||||
.na | Yes | Yes | |||||
.nc | Yes | Yes | |||||
.ne | No | Yes | |||||
.nf | Yes | Yes | |||||
.ng | No | Yes | |||||
.ni | No | No | |||||
.nl | Nederland | First official country code TLD.[19] | No | Yes | Yes | ||
.no | Businesses and professionals must be registered as an approved type of organization in the Brønnøysund Register Centre. Individual applicants must be of age (18 years) and be registered in the Folkeregisteret. All applicants must have a Norwegian postal address. | Yes | No | Yes | |||
.np | No | No | |||||
.nr | Also used as a free domain service to the public as co.nr. | No | Yes | ||||
.nu | Commonly used by Danish, Dutch and Swedish websites, because in those languages "nu" means "now". | Yes | Yes | Yes | |||
.nz | Māori[cctld 16] | Yes | No | ||||
.om | Registrant must have company or trademark registered in Oman as well as a local administrative contact. | No | No | ||||
.pa | No | No | |||||
.pe | Yes[cctld 17] | Yes | Yes | ||||
.pf | Polynésie française | With Clipperton Island | No | Yes | |||
.pg | No | No | |||||
.ph | No | Yes | |||||
.pk | Operated by PKNIC since 1992 | No | Yes | ||||
.pl | Yes[cctld 18] | Yes | Yes | ||||
.pm | Restricted to individuals and companies in European Union, Switzerland, Norway, Iceland and Liechtenstein.[cctld 11] | Yes | Yes | ||||
.pn | No | Yes | |||||
.pr | Yes | Yes | |||||
.ps | West Bank and Gaza Strip. | No | Yes | ||||
.pt | Portuguese | Yes | Yes | Yes[21] | |||
.pw | Pelew | Yes | Yes | ||||
.py | No | No | |||||
.qa | No | No | |||||
.re | Restricted to individuals and companies in European Union, Switzerland, Norway, Iceland and Liechtenstein.[cctld 11] | Yes[cctld 12] | Yes | Yes | |||
.ro | No | Yes | |||||
.rs | Republika Srbija | No | Yes | ||||
.ru | See also .su, still in use, and .рф. | Yes | Yes | ||||
.rw | No | Yes | |||||
.sa | Registrant must have a registered trademark in Saudi Arabia matching the domain name to register or provide company incorporation documents of a company in Saudi Arabia or for personal registrations a copy of valid ID. A letter on the official letterhead of your organization addressed to SaudiNIC requesting the domain name registration is also required. Local administrative contact required. 2LD registrations rolled out in 2011.[22] | No | Yes | ||||
.sb | British Solomon Islands | Yes | No | ||||
.sc | Yes | Yes | |||||
.sd | No | Yes | |||||
.se | Yes[cctld 19] | Yes | Yes | ||||
.sg | No | Yes | |||||
.sh | Yes[cctld 20] | Yes | Yes | ||||
.si | Yes[cctld 21] | Yes | Yes | ||||
.sj | Not in use (Norwegian dependencies; see .no). | No | Yes[23] | No | |||
.sk | Restricted to Slovak companies, organisations and citizens | No | Yes | ||||
.sl | No | Yes | |||||
.sm | Domain name must be same as company name or trademark | No | Yes | ||||
.sn | No | Yes | |||||
.so | Relaunched on November 1, 2010 | No | No | Yes | |||
.sr | No | Yes | |||||
.ss | Removed from the root DNS zone in April 2013 | No | |||||
.st | No | Yes | |||||
.su | Still in use. | Yes[cctld 22] | Yes | Yes | |||
.sv | No | No | |||||
.sx | Yes | No | |||||
.sy | No | Yes | |||||
.sz | Registration is restricted to Swaziland organizations with Swaziland Trading Licenses. | No | No | ||||
.tc | .TC domains are also marketed in Turkey. The official abbreviation of 'Türkiye Cumhuriyeti' is TC. | No | Yes | ||||
.td | Tchad | Chadian (.td) domains are available for registration to entities connected with Chad only. | No | Yes | |||
.tf | Terres australes et antarctiques françaises | Seldom used. Restricted to individuals and companies in European Union, Switzerland, Norway, Iceland and Liechtenstein.[cctld 11] | Yes[cctld 12] | Yes | Yes | ||
.tg | No | Yes | |||||
.th | Yes | Yes | No | ||||
.tj | No | Yes | |||||
.tk | Also used as a free domain service to the public. Used in the Netherlands because tk ('te koop') means 'for sale' in Dutch. | No | Yes | ||||
.tl | Timor-Leste | Old code .tp is still in use. | No | Yes | |||
.tm | Yes[cctld 23] | Yes | Yes | ||||
.tn | No | Yes | |||||
.to | Often used unofficially for Torrent, Turin, Toronto, Tokyo, or Tocantins | Yes | No | Yes | |||
.tp | Timor Português | ISO code has changed to TL; .tl is now assigned but .tp is still in use. | No | Yes | |||
.tr | .nc.tr used by Northern Cyprus | Yes[cctld 24] | No | Yes | |||
.tt | Yes | Yes | |||||
.tv | Used as an abbreviation of television, the domain is currently operated by dotTV, aVeriSign company; the Tuvalu government owns twenty percent of the company. | Yes | Yes | ||||
.tw | Registration allowed worldwide, local presence not required. In line with ISO 3166-1, IANA's official position is that “TW” is "designated for use to represent "Taiwan, Province of China."[24] | Yes[cctld 25] | Yes | Yes | |||
.tz | Must have a presence in Tanzania | Yes | No | ||||
.ua | Україна/Ukraina | Ukrainian trademark required | Yes | Yes | |||
.ug | Yes | Yes | |||||
.uk | The ISO 3166-1 code for the United Kingdom is GB. UK is a specially reserved ISO 3166-1 code for the UK. However, the creation of the .uk TLD predates the ISO 3166-1 list of ccTLD and is the primary TLD for the United Kingdom.[10] | Yes | Yes | ||||
.us | Formerly commonly used by US State and local governments, see also .gov TLD | Yes | Yes | ||||
.uy | 2LD rollout began on 10 July 2012.[25] | No | Yes | ||||
.uz | No | Yes | |||||
.va | Vaticano | Limited to the official sites of the Holy See (including those of the Vatican City State) | No | No | |||
.vc | Partial[13] | Yes | |||||
.ve | No | No | |||||
.vg | No | Yes | |||||
.vi | No | Yes | |||||
.vn | Yes[cctld 26] | No | Yes | ||||
.vu | No | Yes | |||||
.wf | Restricted to individuals and companies in European Union, Switzerland, Norway, Iceland and Liechtenstein.[cctld 11] | Yes[cctld 12] | Yes | Yes | |||
.ws | Formerly Western Samoa | Marketed to be used in general WebSites | Yes | No | Yes | ||
.ye | No | No | |||||
.yt | Restricted to individuals and companies in European Union, Switzerland, Norway, Iceland and Liechtenstein.[cctld 11] | Yes[cctld 12] | Yes | Yes | |||
.yu | After renaming of FR Yugoslavia, used for the | No | No | ||||
.za | Zuid-Afrika | No | No | ||||
.zm | No | No | |||||
.zr | Zaire renamed Democratic Republic of the Congo in 1997. .zr was removed in 2001 | No | Unknown | ||||
.zw |