If you would like to direct a domain name that you have to some other domain address or subdomain, one of the ways to do that would be to use a CNAME record. By setting up such a record, the domain being forwarded loses all its records (A, MX, and so forth) and instead, it takes the A record of the domain address it's redirected to. By doing this, 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 redirected to the website 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 of the traffic from various subdomains to their main domain address, or to use the webmail service of your hosting company by using webmail.your-doman.com, for example. The latter will work only by setting up a CNAME record for a subdomain simply because such a record set up for the main domain name renders it impossible to use e-mail addresses.