A domain name can contain only letters, numbers, or hyphen ("-")
A domain name cannot begin or end with a hyphen.
.com, .net and .org domain names must be at least 2 characters.
.com, .net and .org domain names cannot exceed 67 characters.
.co.uk .org.uk ,biz and .info domain names cannot exceed 22 characters.
.co.uk .org.uk .biz and .info domain names must be at least 3 characters.
Domain names are not case sensitive.
Domain names cannot include spaces.