The only valid characters for a domain name are letters, numbers and a hyphen "-". Other special characters like the underscore "_" or an exclamation mark "!" are NOT permitted.
For example: your name.com is incorrect because no spaces are allowed and your-name.com is correct.
A domain name can be up to 67 characters long -- including the 4 characters used to identify the Top Level Domain (.net, .com or .org). Do not type the "www." before your domain name when registering.
I'm trying to set up a domain name, but I'm having problems. Most of the names I would like to use are already taken. I know you can use an underscore (_) in a domain name and a dash (-). Are there any other special characters I can use. Specifically, I'd like to use the single quote (') to use Amelia's.