If you would like to forward a domain that you have to another 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 pointed to. This way, if you are using 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 have created, but it'll 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 different subdomains to their main domain, or to use the webmail service of your hosting provider by using webmail.your-doman.com, for example. The latter will work only by creating a CNAME record for a subdomain simply because this kind of a record set up for the main domain name renders it impossible to use e-mail addresses.