If you want to point a domain address that you have to some other domain name or subdomain, one way to do this would be to use a CNAME record. By setting up such a record, the domain being forwarded loses all its records (A, MX, etc) and instead, it takes the A record of the domain name it's redirected to. This way, if you are using a web design service by some company that gives you a subdomain, you can use an actual domain name and not only will it be forwarded to the site which you have set up, but it will also be displayed in the browser address bar at all times. Some other possible uses of a CNAME record are to redirect all the traffic from various subdomains to their main Internet domain, or to use the webmail service of your hosting provider 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 name makes it impossible to use e-mail addresses.