A domain name can be up to 63 characters long excluding the dot and characters used to
identify the top-level domain extension (i.e. .COM, .NET, .INFO, etc.)
Valid characters in a domain name include letter, numbers and hyphens
"-". The domain name must start with and end with a letter or
"http://" and "www." are not part of a domain name.
Instead they are used with your domain name to form a URL (Universal
Resource Locator) that can be used by web browsers to find your site on
the World Wide Web.