If you'd like to direct a domain address that you have to some other domain or subdomain, the best way to do this would be to use a CNAME record. By setting up such a record, the domain address being pointed loses all of its records (A, MX, and so forth) and instead, it takes the A record of the Internet domain it's redirected to. By doing this, if you use a web design service by some company that gives you a subdomain, you can use an actual domain and not only will it be pointed to the site which you have set up, but it'll also be displayed in the web browser address bar at all times. Some other possible uses of a CNAME record are to point all of the targeted traffic from different subdomains to their main Internet 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 setting up a CNAME record for a subdomain because this kind of a record set up for the main domain address renders it impossible to use e-mail addresses.