If you'd like to direct a domain that you have to some other domain or subdomain, one of the ways to do this would be to use a CNAME record. By setting up such a record, the domain being pointed loses all its records (A, MX, and so forth) and instead, it takes the A record of the domain it is redirected to. That way, if you use a web design service by some provider that gives you a subdomain, you can use an actual domain name and not only will it be forwarded to the Internet site that you've created, but it'll also appear in the Internet browser address bar at all times. Alternative possible uses of a CNAME record are to forward all of the visitors from different subdomains to their main domain, or to use the webmail service of your hosting company by using webmail.your-doman.com, for instance. The latter will work only by setting up a CNAME record for a subdomain due to the fact that this type of a record created for the main domain address makes it impossible to use e-mail addresses.