If you want to direct a domain name that you have to some other domain name or subdomain, one way to do that would be to use a CNAME record. By setting up such a record, the domain address being redirected loses all of its records (A, MX, and so on) and instead, it takes the A record of the domain address it's pointed to. This way, if you use a web design service by some provider that gives you a subdomain, you can use an actual domain and not only will it be pointed to the Internet site which you have set up, 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 the targeted traffic from different subdomains to their main domain name, 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 due to the fact that such a record created for the main domain name makes it impossible to use e-mail addresses.