| Extension | Domain Name Length |
| .COM | 3 - 63 Characters |
| .NET | 3 - 63 Characters |
| .ORG | 3 - 63 Characters |
| .INFO | 3 - 63 Characters |
| .BIZ | 3 - 63 Characters |
| .MOBI | 3 - 63 Characters |
| .NAME | 3 - 63 Characters |
| CentralNic | 3 - 64 Characters |
| .ASIA | 3 - 63 Characters |
| .TEL | 3 - 63 Characters |
| .IN | 3 - 63 Characters |
| .MN | 3 - 63 Characters |
| .BZ | 3 - 63 Characters |
| .CC | 3 - 63 Characters |
| .TV | 3 - 63 Characters |
| .EU | 2 - 63 Characters |
| .UK | 6 - 64 Characters for .co.uk/.me.uk extensions (including the extension)
7 - 64 Characters for .org.uk extension (including the extension) |
| .US | 3 - 63 Characters |
| .WS | 4 - 63 Characters |
| .ME | 3 - 63 Characters |
| .CN | 1 - 63 Characters |
| .NZ | 1 - 63 Characters |
