hello,
I want to register a domain name.What characters can i used in a domain?

A domain can contain numbers (0-9), letters (a-z) or hyphen (-). A domain cannot begin or end with the hyphen (-) nor they can be in consecutive order. Empty space is not allowed in the domain name. Domain names must be at least 3 and at most 63 characters long. A domain name is not case-sensitive, so you can use upper or lowercase letters when using your new domain.