If you want to point a domain that you have to a different domain or subdomain, one way to do that would be to use a CNAME record. By creating such a record, the domain name being forwarded loses all of its records (A, MX, and so forth) and instead, it takes the A record of the domain it is directed to. In this way, if you are using 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 website that you have created, but it'll also appear in the browser address bar at all times. Other possible uses of a CNAME record are to redirect all the traffic from various subdomains to their main domain, or to use the webmail service of your webhosting company by using webmail.your-doman.com, for instance. The latter will work only by creating a CNAME record for a subdomain simply because this kind of a record created for the main domain address makes it impossible to use e-mail addresses.