If you wish to point a domain address that you have to another domain name or subdomain, one of the ways to do that would be to use a CNAME record. By creating such a record, the domain name being forwarded loses all its records (A, MX, and so forth) and instead, it takes the A record of the Internet domain it is directed 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 and not only will it be redirected to the site you have created, but it will also appear in the browser address bar at all times. Some other possible uses of a CNAME record are to redirect all of the visitors from various subdomains to their main domain address, 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 such a record created for the main domain name makes it impossible to use e-mail addresses.