If you wish to point a domain name that you have to a different domain or subdomain, one way to do this would be to use a CNAME record. By setting up such a record, the domain address being pointed loses all its records (A, MX, etc) and instead, it takes the A record of the domain it's forwarded to. That way, if you use a web design service by some provider that gives you a subdomain, you can use an actual domain and not only will it be redirected to the site which you have created, but it will also be displayed in the browser address bar at all times. Alternative possible uses of a CNAME record are to forward all of the targeted traffic from different 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 simply because this kind of a record created for the main domain address makes it impossible to use email addresses.