Codes
- Internet domains
| Domain | Country |
| .ae | United Arab Emirates |
| .al | Albania |
| .am | Armenia |
| .ar | Argentina |
| .arpa | Old style Arpanet |
| .at | Austria |
| .au | Australia |
| .az | Azerbaidjan |
| .ba | Bosnia-Herzegovina |
| .be | Belgium |
| .bf | Burkina Faso |
| .bg | Bulgaria |
| .bh | Bahrain |
| .bm | Bermuda |
| .bn | Brunei Darussalam |
| .bo | Bolivia |
| .br | Brazil |
| .by | Belarus |
| .ca | Canada |
| .ch | Switzerland |
| .ci | Cote-d'Ivoire |
| .cl | Chile |
| .cn | China |
| .co | Colombia |
| .com | Commercial, mainly USA |
| .cr | Costa Rica |
| .cy | Cyprus |
| .cz | Czech Republic |
| .de | Germany |
| .dk | Denmark |
| .do | Dominican Republic |
| .ec | Ecuador |
| .edu | USA Educational |
| .ee | Estonia |
| .eg | Egypt |
| .es | Spain |
| .fi | Finland |
| .fr | France |
| .gb | Great Britain |
| .ge | Georgia |
| .gl | Greenland |
| .gov | USA Government |
| .gr | Greece |
| .hk | Hong Kong |
| .hn | Honduras |
| .hr | Croatia |
| .hu | Hungary |
| .id | Indonesia |
| .ie | Ireland |
| .il | Israel |
| .in | India |
| .int | International |
| .is | Iceland |
| .it | Italy |
| .jo | Jordan |
| .jp | Japan |
| .kg | Kyrgyzstan |
| .kr | South Korea |
| .kw | Kuwait |
| .kz | Kazakhstan |
| .lt | Lithuania |
| .lu | Luxembourg |
| .lv | Latvia |
| .md | Moldova |
| .mil | USA Military |
| .mk | Macedonia |
| .mt | Malta |
| .mu | Mauritius |
| .mv | Maldives |
| .mx | Mexico |
| .my | Malaysia |
| .na | Namibia |
| .net | Network |
| .ni | Nicaragua |
| .nl | Netherlands |
| .no | Norway |
| .np | Nepal |
| .nz | New Zealand |
| .om | Oman |
| .org | Non-Profit Making Organisations |
| .pe | Peru |
| .ph | Philippines |
| .pl | Poland |
| .pt | Portugal |
| .py | Paraguay |
| .qa | Qatar |
| .ro | Romania |
| .ru | Russian Federation |
| .se | Sweden |
| .sg | Singapore |
| .si | Slovenia |
| .sk | Slovak Republic |
| .sn | Senegal |
| .su | Former USSR |
| .th | Thailand |
| .tr | Turkey |
| .tt | Trinidad and Tobago |
| .tw | Taiwan |
| .ua | Ukraine |
| .uk | United Kingdom |
| .us | United States |
| .uy | Uruguay |
| .uz | Uzbekistan |
| .va | Vatican City State |
| .ve | Venezuela |
| .ye | Yemen |
| .yu | Yugoslavia |
| .za | South Africa |
| .zm | Zambia |
| .zw | Zimbabwe |
Internet systems