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Domain Name System (ชื่อ DNS ) จะประกอบไปด้วย ชื่อเครื่อง computer ชื่อเครือข่ายท้องถิ่น Local ชื่อสับโดเมน (subdomain) และ ชื่อโดเมน Domain name โดย นามสกุล ของ Domain มักจะมีความหมายในตัวของมัน เช่น ตัวย่อของ
ชื่อประเทศ หรือ ชนิดของ องค์การ เช่น บริษัท สถาบันการศึกษา องค์กรของรัฐ องค์กรทางทหาร เป็นต้น ดังที่แสดงใน ตาราง ชื่อ Domain ข้างล่าง สำหรับคำถามอื่นๆ เกี่ยวกับเรื่องของ Domain สามารถอ่านได้ที่ FAQ Domain
| iTLD | Entity | Domain * Notes |
|---|---|---|
| .arpa | Address and Routing Parameter Area | This is an internet infrastructure tld. |
| .root | unknown Domain | This is in root for some unknown purpose, with only one entry (a TXT record). |
| gTLD | generic TLD Entity | Domain * Notes |
| .aero | air-transport industry | |
| .biz | business | This is an open TLD; any person or entity is permitted to register. |
| .cat | Catalan | This is a TLD for websites 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 institutions of learning (mostly U.S.), such as 2 and 4-year colleges and universities. |
| .gov | governmental | The .gov TLD is limited to US governmental entities and agencies |
| .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 | United States Military | The .mil TLD is limited to use by the U.S. military |
| .mobi | mobile devices | |
| .museum | museums | |
| .name | individuals, by name | This is an open TLD; any person or entity is permitted to register. |
| .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 doctors, attorneys, and certified public accountants only. A professional seeking to register a .pro domain must provide their registrar with the appropriate credentials. |
| .travel | travel and travel-agency related sites | |
| TLD | Country/dependency/region | Notes |
| .ac | Ascension Island | |
| .ad | Andorra | |
| .ae | United Arab Emirates | |
| .af | Afghanistan | |
| .ag | Antigua and Barbuda | |
| .ai | Anguilla | |
| .al | Albania | |
| .am | Armenia | |
| .an | Netherlands Antilles | |
| .ao | Angola | |
| .aq | Antarctica | Defined as per the Antarctic Treaty as everything south of latitude 60?S |
| .ar | Argentina | |
| .as | American Samoa | |
| .at | Austria | |
| .au | Australia | Includes Ashmore and Cartier Islands and Coral Sea Islands |
| .aw | Aruba | |
| .az | Azerbaijan | |
| .ba | Bosnia and Herzegovina | |
| .bb | Barbados | |
| .bd | Bangladesh | |
| .be | Belgium | |
| .bf | Burkina Faso | |
| .bg | Bulgaria | |
| .bh | Bahrain | |
| .bi | Burundi | |
| .bj | Benin | |
| .bm | Bermuda | |
| .bn | Brunei Darussalam | |
| .bo | Bolivia | |
| .br | Brazil | |
| .bs | Bahamas | |
| .bt | Bhutan | |
| .bv | Bouvet Island | Not in use (Norwegian dependency; see .no) |
| .bw | Botswana | |
| .by | Belarus | |
| .bz | Belize | |
| .ca | Canada | |
| .cc | Cocos (Keeling) Islands | |
| .cd | Democratic Republic of the Congo | Formerly Zaire |
| .cf | Central African Republic | |
| .cg | Republic of the Congo | |
| .ch | Switzerland (Confoederatio Helvetica) | |
| .ci | C?te d'Ivoire | |
| .ck | Cook Islands | |
| .cl | Chile | |
| .cm | Cameroon | |
| .cn | People's Republic of China | Mainland China only: Hong Kong, Macau, and Taiwan (Republic of China) use separate TLDs. |
| .co | Colombia | |
| .cr | Costa Rica | |
| .cu | Cuba | |
| .cv | Cape Verde | |
| .cx | Christmas Island | |
| .cy | Cyprus | |
| .cz | Czech Republic | |
| .de | Germany (Deutschland) | |
| .dj | Djibouti | |
| .dk | Denmark | |
| .dm | Dominica | |
| .do | Dominican Republic | |
| .dz | Algeria | Not available for private use |
| .ec | Ecuador | |
| .ee | Estonia | |
| .eg | Egypt | |
| .er | Eritrea | |
| .es | Spain (Espa?a) | |
| .et | Ethiopia | |
| .eu | European Union | |
| .fi | Finland | |
| .fj | Fiji | |
| .fk | Falkland Islands | |
| .fm | Federated States of Micronesia | Used for some radio related websites outside Micronesia |
| .fo | Faroe Islands | |
| .fr | France | |
| .ga | Gabon | |
| .gb | United Kingdom | Seldom used; the primary ccTLD is .uk |
| .gd | Grenada | |
| .ge | Georgia | |
| .gf | French Guiana | |
| .gg | Guernsey | |
| .gh | Ghana | |
| .gi | Gibraltar | |
| .gl | Greenland | |
| .gm | The Gambia | |
| .gn | Guinea | |
| .gp | Guadeloupe | |
| .gq | Equatorial Guinea | |
| .gr | Greece | |
| .gs | South Georgia and the South Sandwich Islands | |
| .gt | Guatemala | |
| .gu | Guam | |
| .gw | Guinea-Bissau | |
| .gy | Guyana | |
| .hk | Hong Kong | Special administrative region of the People's Republic of China. |
| .hm | Heard Island and McDonald Islands | |
| .hn | Honduras | |
| .hr | Croatia (Hrvatska) | |
| .ht | Haiti | |
| .hu | Hungary | |
| .id | Indonesia | |
| .ie | Ireland (Eire) | |
| .il | Israel | |
| .im | Isle of Man | |
| .in | India | |
| .io | British Indian Ocean Territory | |
| .iq | Iraq | |
| .ir | Iran | |
| .is | Iceland | |
| .it | Italy | Restricted to companies and individuals in the European Union |
| .je | Jersey | |
| .jm | Jamaica | |
| .jo | Jordan | |
| .jp | Japan | |
| .ke | Kenya | |
| .kg | Kyrgyzstan | |
| .kh | Cambodia (Khmer) | |
| .ki | Kiribati | |
| .km | Comoros | |
| .kn | Saint Kitts and Nevis | |
| .kr | South Korea | |
| .kw | Kuwait | |
| .ky | Cayman Islands | |
| .kz | Kazakhstan | |
| .la | Laos | |
| .lb | Lebanon | |
| .lc | Saint Lucia | |
| .li | Liechtenstein | |
| .lk | Sri Lanka | |
| .lr | Liberia | |
| .ls | Lesotho | |
| .lt | Lithuania | |
| .lu | Luxembourg | |
| .lv | Latvia | |
| .ly | Libya | |
| .ma | Morocco | |
| .mc | Monaco | |
| .md | Moldova | |
| .mg | Madagascar | |
| .mh | Marshall Islands | |
| .mk | Republic of Macedonia | |
| .ml | Mali | |
| .mm | Myanmar | |
| .mn | Mongolia | |
| .mo | Macau | Special administrative region of the People's Republic of China. |
| .mp | Northern Mariana Islands | |
| .mq | Martinique | |
| .mr | Mauritania | |
| .ms | Montserrat | |
| .mt | Malta | |
| .mu | Mauritius | |
| .mv | Maldives | |
| .mw | Malawi | |
| .mx | Mexico | |
| .my | Malaysia | |
| .mz | Mozambique | |
| .na | Namibia | |
| .nc | New Caledonia | |
| .ne | Niger | |
| .nf | Norfolk Island | |
| .ng | Nigeria | |
| .ni | Nicaragua | |
| .nl | Netherlands | |
| .no | Norway | |
| .np | Nepal | |
| .nr | Nauru | |
| .nu | Niue | Commonly used for Swedish websites. |
| .nz | New Zealand | |
| .om | Oman | |
| .pa | Panama | |
| .pe | Peru | |
| .pf | French Polynesia | With Clipperton Island |
| .pg | Papua New Guinea | |
| .ph | Philippines | |
| .pk | Pakistan | |
| .pl | Poland | |
| .pm | Saint-Pierre and Miquelon | |
| .pn | Pitcairn Islands | |
| .pr | Puerto Rico | |
| .ps | Palestine | West Bank and Gaza Strip |
| .pt | Portugal | |
| .pw | Palau | |
| .py | Paraguay | |
| .qa | Qatar | |
| .re | R?union | |
| .ro | Romania | |
| .ru | Russia | |
| .rw | Rwanda | |
| .sa | Saudi Arabia | |
| .sb | Solomon Islands | |
| .sc | Seychelles | |
| .sd | Sudan | |
| .se | Sweden | |
| .sg | Singapore | |
| .sh | Saint Helena | |
| .si | Slovenia | |
| .sj | Svalbard and Jan Mayen Islands | Not in use (Norwegian dependencies; see .no) |
| .sk | Slovakia | |
| .sl | Sierra Leone | |
| .sm | San Marino | |
| .sn | Senegal | |
| .so | Somalia | |
| .sr | Suriname | |
| .st | S?o Tom? and Pr?ncipe | |
| .su | former Soviet Union | Still in use |
| .sv | El Salvador | |
| .sy | Syria | |
| .sz | Swaziland | |
| .tc | Turks and Caicos Islands | |
| .td | Chad | |
| .tf | French Southern and Antarctic Lands | |
| .tg | Togo | |
| .th | Thailand | Domain in Thailand ( .or.th .go.th .in.th .co.th .in.th .mi.th .ac.th ) |
| .tj | Tajikistan | |
| .tk | Tokelau | Also used as a free domain service to the public |
| .tl | East Timor | Old code .tp is still in use |
| .tm | Turkmenistan | |
| .tn | Tunisia | |
| .to | Tonga | |
| .tp | East Timor | ISO code has changed to TL; .tl is now assigned but .tp is still in use |
| .tr | Turkey | |
| .tt | Trinidad and Tobago | |
| .tv | Tuvalu | Also sold as advertising domains |
| .tw | Taiwan (Republic of China) | Used in the area under the effective control of the Government of the Republic of China, namely Taiwan, Penghu, Kinmen, and Matsu. |
| .tz | Tanzania | |
| .ua | Ukraine | |
| .ug | Uganda | |
| .uk | United Kingdom | |
| .um | United States Minor Outlying Islands | |
| .us | United States of America | |
| .uy | Uruguay | |
| .uz | Uzbekistan | |
| .va | Vatican City State | |
| .vc | Saint Vincent and the Grenadines | |
| .ve | Venezuela | |
| .vg | British Virgin Islands | |
| .vi | U.S. Virgin Islands | |
| .vn | Vietnam | |
| .vu | Vanuatu | |
| .wf | Wallis and Futuna | |
| .ws | Samoa | Formerly Western Samoa |
| .ye | Yemen | |
| .yt | Mayotte | |
| .yu | Yugoslavia | Now Serbia and Montenegro; ISO code has changed to CS; .cs is reserved, but has not yet been put into use. |
| .za | South Africa (Zuid Afrika) | |
| .zm | Zambia | |
| .zw | Zimbabwe |
