| A | B |
| .com | represents the word "commercial," and is the most widely used extension in the world. |
| .net | represents the word "network," and is most commonly used by Internet service providers, Web-hosting companies |
| .org | represents the word "organization," and is primarily used by non-profits groups or trade associations. |
| .biz | is used for small business Web sites. |
| .info | is for credible resource Web sites and signifies a "resource" web site. |
| .mobi | (short for "mobile") is reserved for Web sites built for easy viewing on mobile devices. |
| .us | is for American Web sites and is the newest extension. |
| .tv | is for rich content/multi-media Web sites, commonly used within the entertainment or media industry. |
| .name | is the only domain extension specifically designed for personal use |
| .uk | is the country code for United Kingdom. |
| .eu | is the country code for the European Union. |
| .cn | is the country code for China. |
| .gov | represents government websites |
| .edu | represents education institutions such as universities, colleges and schools |
| .ca | is the country code for Canada. |