Characters that are allowed for the domain registration

A domain name can contain all the letters of the alphabet (from "a" to "z"), all numbers (from “0" to "9") plus the hyphen "-" provided that it is not entered as the first nor the last  character of the domain name that you wish to register.

For example you can register but not or

The length of the domain name, however, can vary from a minimum of 3 to a maximum of 63 characters.