The following is a list of Internet top-level domains. The top-level domain article provides the background information.
The official list of all top-level domains is maintained by the Internet Assigned Numbers Authority (IANA).
Generic top-level domains
| gTLD | Entity | Notes |
| .aero | air-transport industry | Must verify eligibility for registration; only those in various categories of air-travel-related entities may register. |
| .asia | Asia-Pacific region | This is a TLD for companies, organizations, and individuals based in the region of Asia, Australia, and the Pacific. |
| .biz | business | This is an open TLD; any person or entity is permitted to register; however, registrations may be challenged later if they are not by commercial entities in accordance with the domain’s charter. |
| .cat | Catalan | This is a TLD for Web sites in the Catalan language or related to Catalan culture. |
| .com | commercial | This is an open TLD; any person or entity is permitted to register. |
| .coop | cooperatives | The .coop TLD is limited to cooperatives as defined by the Rochdale Principles. |
| .edu | educational | The .edu TLD is limited to accredited postsecondary institutions (nearly all 2 and 4-year colleges and universities in the U.S. and increasingly overseas, e.g., Australia and China). |
| .gov | governmental | The .gov TLD is limited to governmental entities and agencies in the United States. |
| .info | information | This is an open TLD; any person or entity is permitted to register. |
| .int | international organizations | The .int TLD is strictly limited to organizations, offices, and programs which are endorsed by a treaty between two or more nations. |
| .jobs | companies | The .jobs TLD is designed to be added after the names of established companies with jobs to advertise. At this time, owners of a “company.jobs” domain are not permitted to post jobs of third party employers. |
| .mil | U.S. military | The .mil TLD is limited to use by the U.S. military. |
| .mobi | mobile devices | Must be used for mobile-compatible sites in accordance with standards. |
| .museum | museums | Must be verified as a legitimate museum. |
| .name | individuals, by name | This is an open TLD; any person or entity is permitted to register; however, registrations may be challenged later if they are not by individuals (or the owners of fictional characters) in accordance with the domain’s charter. |
| .net | network | This is an open TLD; any person or entity is permitted to register. |
| .org | organization | This is an open TLD; any person or entity is permitted to register. |
| .pro | professions | Currently, .pro is reserved for licensed or certified lawyers, accountants, physicians and engineers in France, Canada, UK and the U.S. A professional seeking to register a .pro domain must provide their registrar with the appropriate credentials. |
| .tel | Internet communication services | |
| .travel | travel and tourism industry related sites | Must be verified as a legitimate travel-related entity. |
Country code top-level domains
ASCII ccTLDs
Internationalized country codes
| IDN ccTLD | Country | ASCII form | Transliteration | Other ccTLD |
| مصر. | Egypt | .xn--wgbh1c | masr | .eg |
| .рф | Russia | .xn--p1ai | RF (Russian Federation) | .ru |
| السعودية. | Saudi Arabia | .xn--mgberp4a5d4ar | as-sa’ūdiyyah | .sa |
| امارات. | United Arab Emirates | .xn--mgbaam7a8h | emarat | .ae |
Test TLDs
The first eleven IDNA TLDs were added on October 2007 for the purpose of testing the use of IDNA at the top level, and are going to be live for a limited evaluation period. Each of these TLDs encodes a word meaning “test” in some language.
Each of these domains has only one site with the word example encoded in the respective script and language. These example.test sites are test wikis used by ICANN.
| TLD | Transliteration | IDNA TLD | Language | Script | ICANN’s example.test |
| إختبار. | ạ̹kẖtbạr. | .xn--kgbechtv | Arabic | Perso-Arabic script (see also Arabic alphabet) | http://مثال.إختبار/ |
| آزمایشی. | ậzmạy̰sẖy. | .xn--hgbk6aj7f53bba | Persian | Perso-Arabic script | http://مثال.آزمایشی/ |
| .测试 | .cèshì | .xn--0zwm56d | Chinese | Simplified Chinese characters | http://例子.测试/ |
| .測試 | .cèshì | .xn--g6w251d | Chinese | Traditional Chinese characters | http://例子.測試/ |
| .испытание | .ispytánije | .xn--80akhbyknj4f | Russian | Cyrillic alphabet | http://пример.испытание/ |
| .परीक्षा | .parīkṣā | .xn--11b5bs3a9aj6g | Hindi | Devanagari | http://उदाहरण.परीक्षा/ |
| .δοκιμή | .dokimé | .xn--jxalpdlp | Greek | Greek alphabet | http://παράδειγμα.δοκιμή/ |
| .테스트 | .teseuteu | .xn--9t4b11yi5a | Korean | Hangul | http://실례.테스트/ |
| טעסט. | .test | .xn--deba0ad | Yiddish | Hebrew alphabet | http://בײַשפּיל.טעסט/ |
| .テスト | .tesuto | .xn--zckzah | Japanese | Kanji, Hiragana, Katakana scripts | http://例え.テスト/ |
| .பரிட்சை | .pariṭcai | .xn--hlcj6aya9esc7a | Tamil | Tamil script | http://உதாரணம்.பரிட்சை/ |
Infrastructure
| Infrastructure | Entity | Notes |
| .arpa | Address and Routing Parameter Area | This is an Internet infrastructure TLD. |
