If you would like to point a domain address that you have to a different domain address or subdomain, one of the ways to do this would be to use a CNAME record. By creating such a record, the domain being forwarded loses all of its records (A, MX, etc) and instead, it takes the A record of the domain it is pointed to. In 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 directed to the Internet site which you have set up, 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 visitors from various subdomains to their main domain name, or to use the webmail service of your hosting provider by using webmail.your-doman.com, for instance. The latter will work only by creating a CNAME record for a subdomain due to the fact that this kind of a record set up for the main domain name renders it impossible to use email addresses.