World wide domain name extension, there are more than 200 domain extension which available worldwide as per following. The official list of all top-level domains is maintained by the Internet Assigned Numbers Authority (IANA).
| .AC | Ascension Island |
| .AD | Andorra |
| .AE | United Arab Emirates |
| .AF | Afghanistan |
| .AG | Antigua and Barbuda |
| .AI | Anguilla |
| .AL | Albania |
| .AM | Armenia |
| .AN | Antilles |
| .AP | Asia Pacific |
| .AQ | Antarctica |
| .AR | Argentina |
| .AS | American Samoa |
| .AT | Austria |
| .AU | Australia |
| .AZ | Azerbaijan |
| .BA | Bosnia and Herzegovina |
| .BB | Barbados |
| .BE | Belgium |
| .BF | Burkina Faso |
| .BG | Bulgaria |
| .BH | Bahrain |
| .BI | Burundi |
| .BM | Bermuda |
| .BN | Brunei Darussalam |
| .BO | Bolivia |
| .BR | Brazil |
| .BT | Bhutan |
| .BY | Belarus |
| .BZ | Belize |
| .CA | Canada |
| .CC | Cocos Islands |
| .CD | Dem. Republic of Congo |
| .CF | Central African Republic |
| .CG | Congo |
| .CH | Switzerland |
| .CK | Cook Islands |
| .CL | Chile |
| .CM | Cameroon |
| .CN | China |
| .CO | Colombia |
| .CR | Costa Rica |
| .CU | Cuba |
| .CX | Christmas Island |
| .CY | Cyprus |
| .CZ | Czech Republic |
| .DE | Germany |
| .DJ | Djibouti |
| .DK | Denmark |
| .DO | Dominican Republic |
| .DZ | Algeria |
| .EC | Equador |
| .EE | Estonia |
| .EG | Egypt |
| .ES | Spain |
| .FI | Finland |
| .FJ | Fiji |
| .FK | Falkland Islands |
| .FM | Micronesia |
| .FR | France |
| .FO | Faroe Islands |
| .GB | Great Britain |
| .GE | Georgia |
| .GF | French Guiana |
| .GG | Guernsey/Alderney/Sark |
| .GH | Ghana |
| .GI | Gibraltar |
| .GL | Greenland |
| .GM | Gambia |
| .GN | Guinea |
| .GR | Greece |
| .GS | South Georgia and the South Sandwich Islands |
| .GT | Guatemala |
| .GU | Guam |
| .HK | Hong Kong |
| .HM | Heard Island |
| .HN | Honduras |
| .HR | Croatia |
| .HU | Hungary |
| .ID | Indonesia |
| .IE | Ireland |
| .IL | Israel |
| .IM | Isle of Man |
| .IN | India |
| .INT | International Treaties |
| .IO | British Indian Ocean Terr. |
| .IR | Iran |
| .IS | Iceland |
| .IT | Italy |
| .JE | Jersey |
| .JO | Jordan |
| .JP | Japan |
| .KE | Kenya |
| .KG | Kyrgyzstan |
| .KH | Cambodia |
| .KR | Korea |
| .KW | Kuwait |
| .KY | Cayman |
| .KZ | Kazahstan |
| .LB | Lebanon |
| .LC | Saint Lucia |
| .LI | Liechtenstein |
| .LK | Sri Lanka |
| .LR | Liberia |
| .LT | Lithuania |
| .LU | Luxembourg |
| .LV | Latvia |
| .LY | Libya |
| .MC | Monaco |
| .MD | Moldova |
| .MG | Madagascar |
| .MH | Marshall Islands |
| .MK | Macedonia |
| .MM | Myanmar |
| .MN | Mongolia |
| .MO | Macau |
| .MP | Northern Mariana Isl. |
| .MQ | Martinique |
| .MR | Mauritania |
| .MS | Montserrat |
| .MT | Malta |
| .MU | Mauritius |
| .MX | Mexico |
| .MY | Malaysia |
| .MW | Malawi |
| .NA | Namibia |
| .NC | New Caledonia |
| .NF | Norfolk Island |
| .NI | Nicaragua |
| .NL | The Netherlands |
| .NO | Norway |
| .NP | Nepal |
| .NU | Niue |
| .NZ | New Zealand |
| .OM | Oman |
| .PA | Panama |
| .PE | Peru |
| .PG | Papua New Guinea |
| .PH | Philippines |
| .PK | Pakistan |
| .QA | Qatar |
| .RE | Reunion Island |
| .RO | Romania |
| .RU | Russia |
| .RW | Rwanda |
| .SA | Saudi Arabia |
| .SB | Solomon Islands |
| .SE | Sweden |
| .SG | Singapore |
| .SH | Saint Helena |
| .SI | Slovenia |
| .SK | Slovakia |
| .SM | San Marino |
| .SN | Senegal |
| .SO | Somalia |
| .ST | Sao Tome and Principe |
| .SU | Russia |
| .SV | El Salvador |
| .SZ | Swaziland |
| .TC | The Turks and Caicos Islands |
| .TD | Tchad |
| .TF | French Southern Territories |
| .TH | Thailand |
| .TJ | Tajikistan |
| .TM | Turkmenistan |
| .TN | Tunisia |
| .TO | Kingdom of Tonga |
| .TP | East Timor |
| .TR | Turkey |
| .TT | Trinidad and Tobago |
| .TV | Tuvalu |
| .TW | Taiwan |
| .TZ | Tanzania |
| .UA | Ukraine |
| .UG | Uganda |
| .UK | United Kingdom |
| .UM | US Minor Outlying Islands |
| .US | United States |
| .UY | Uruguay |
| .UZ | Uzbekistan |
| .VE | Venezuela |
| .VG | British Virgin Islands |
| .VI | US Virgin Islands |
| .VU | Vanuatu |
| .WF | Wallis and Futuna Islands |
| .WS | Samoa |
| .YT | Mayotte |
| .YU | Yugoslavia |
| .ZA | South Africa |
| .ZM | Zambia |