The following is an exhaustive list of all TLD (Top-Level Domain) extensions, including both gTLD (Generic Top Level Domain) extensions and country codes.

gTLDs (Generic Top Level Domains)

• .aero Aviation
• .biz Business Organizations
• .com Commercial
• .coop Co-Operative Organizations
• .edu Educational
• .gov US Government
• .info Open TLD
• .int International Organizations
• .mil US Dept of Defense
• .museum Museums
• .name Personal
• .net Networks
• .org Organizations

Country Codes

• .af Afghanistan
• .al Albania
• .dz Algeria
• .as American Samoa
• .ad Andorra
• .ao Angola
• .ai Anguilla
• .aq Antarctica
• .ag Antigua and Barbuda
• .ar Argentina
• .am Armenia
• .aw Aruba
• .ac Ascension Island
• .au Australia
• .at Austria
• .az Azerbaijan
• .bs Bahamas
• .bh Bahrain
• .bd Bangladesh
• .bb Barbados
• .by Belarus
• .be Belgium
• .bz Belize
• .bj Benin
• .bm Bermuda
• .bt Bhutan
• .bo Bolivia
• .ba Bosnia and Herzegovina
• .bw Botswana
• .bv Bouvet Island
• .br Brazil
• .io British Indian Ocean Territory
• .bn Brunei Darussalam
• .bg Bulgaria
• .bf Burkina Faso
• .bi Burundi
• .kh Cambodia
• .cm Cameroon
• .ca Canada
• .cv Cape Verde
• .ky Cayman Islands
• .cf Central African Republic
• .td Chad
• .cs Czechoslovakia (former - non-existing)
• .cl Chile
• .cn China
• .cx Christmas Island
• .cc Cocos (Keeling) Islands
• .co Colombia
• .km Comoros
• .cg Congo, Republic of
• .cd Congo, Democratic republic of the (former Zaire)
• .ck Cook Islands
• .cr Costa Rica
• .ci Côte d'Ivoire
• .hr Croatia
• .cu Cuba
• .cy Cyprus
• .cz Czech Republic
• .dk Denmark
• .dj Djibouti
• .dm Dominica
• .do Dominican Republic
• .tp East Timor
• .ec Ecuador
• .eg Egypt
• .sv El Salvador
• .gq Equatorial Guinea
• .er Eritrea
• .ee Estonia
• .et Ethiopia
• .fk Falkland Islands
• .fo Faroe Islands
• .fj Fiji
• .fi Finland
• .fr France
• .gf French Guiana
• .pf French Polynesia
• .tf French Southern Territories
• .ga Gabon
• .gm Gambia
• .ge Georgia
• .de Germany
• .gh Ghana
• .gi Gibraltar
• .gr Greece
• .gl Greenland
• .gd Grenada
• .gp Guadeloupe
• .gu Guam
• .gt Guatemala
• .gg Guernsey
• .gn Guinea
• .gw Guinea-Bissau
• .gy Guyana
• .ht Haiti
• .hm Heard and McDonald Islands
• .va Holy See (Vatican City State)
• .hn Honduras
• .hk Hong Kong
• .hu Hungary
• .is Iceland
• .in India
• .id Indonesia
• .ir Iran
• .iq Iraq
• .ie Ireland
• .im Isle of Man
• .il Israel
• .it Italy
• .jm Jamaica
• .jp Japan
• .je Jersey
• .jo Jordan
• .kz Kazakhstan
• .ke Kenya
• .ki Kiribati
• .kp Korea, Democratic People's Republic of
• .kr Korea, Republic of
• .kw Kuwait
• .kg Kyrgyzstan
• .la Lao People's Democratic Republic
• .lv Latvia
• .lb Lebanon
• .ls Lesotho
• .lr Liberia
• .ly Libyan Arab Jamahiriya
• .li Liechtenstein
• .lt Lithuania
• .lu Luxembourg
• .mo Macau
• .mk Macedonia
• .mg Madagascar
• .mw Malawi
• .my Malaysia
• .mv Maldives
• .ml Mali
• .mt Malta
• .mh Marshall Islands
• .mq Martinique
• .mr Mauritania
• .mu Mauritius
• .yt Mayotte
• .mx Mexico
• .fm Micronesia
• .md Moldova
• .mc Monaco
• .mn Mongolia
• .ms Montserrat
• .ma Morocco
• .mz Mozambique
• .mm Myanmar
• .na Namibia
• .nr Nauru
• .np Nepal
• .nl The Netherlands
• .an Netherlands Antilles
• .nc New Caledonia
• .nz New Zealand
• .ni Nicaragua
• .ne Niger
• .ng Nigeria
• .nu Niue
• .nf Norfolk Island
• .mp Northern Mariana Islands
• .no Norway
• .om Oman
• .pk Pakistan
• .pw Palau
• .ps Palestine
• .pa Panama
• .pg Papua New Guinea
• .py Paraguay
• .pe Peru
• .ph Philippines
• .pn Pitcairn
• .pl Poland
• .pt Portugal
• .pr Puerto Rico
• .qa Qatar
• .re Reunion
• .ro Romania
• .ru Russia
• .rw Rwanda
• .kn Saint Kitts and Nevis
• .lc Saint Lucia
• .vc Saint Vincent and the Grenadines
• .ws Samoa
• .sm San Marino
• .st Sao Tome and Principe
• .sa Saudi Arabia
• .sn Senegal
• .sc Seychelles
• .sl Sierra Leone
• .sg Singapore
• .sk Slovakia
• .si Slovenia
• .sb Solomon Islands
• .so Somalia
• .za South Africa
• .gs South Georgia and the South Sandwich Islands
• .es Spain
• .lk Sri Lanka
• .sh St. Helena
• .pm St. Pierre and Miquelon
• .sd Sudan
• .sr Surinam
• .sj Svalbard and Jan Mayen Islands
• .sz Swaziland
• .se Sweden
• .ch Switzerland
• .sy Syrian Arab Republic
• .tw Taiwan
• .tj Tajikistan
• .tz Tanzania
• .th Thailand
• .tg Togo
• .tk Tokelau
• .to Tonga
• .tt Trinidad and Tobago
• .tn Tunisia
• .tr Turkey
• .tm Turkmenistan
• .tc The Turks & Caicos Islands
• .tv Tuvalu
• .ug Uganda
• .ua Ukraine
• .ae United Arab Emirates
• .gb United Kingdom
• .uk United Kingdom
• .us United States
• .um United States Minor Outlying Islands
• .uy Uruguay
• .su USSR (former)
• .uz Uzbekistan
• .vu Vanuatu
• .ve Venezuela
• .vn Vietnam
• .vg Virgin Islands British
• .vi Virgin Islands U.S
• .wf Wallis and Futuna Islands
• .eh Western Sahara
• .ye Yemen
• .yu Yugoslavia
• .cd Zaire
• .zm Zambia
• .zw Zimbabwe