If you wish to direct a domain that you have to some other domain name or subdomain, the best way to do that would be to use a CNAME record. By setting up such a record, the domain address being pointed loses all its records (A, MX, and so forth) and instead, it takes the A record of the domain it's forwarded to. That 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 redirected to the website that you've created, but it'll also be displayed in the Internet browser address bar at all times. Other possible uses of a CNAME record are to redirect all the visitors from various 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 simply because such a record set up for the main domain makes it impossible to use e-mail addresses.