If you would like to point a domain name that you have to a different domain address or subdomain, the best way to do that would be to use a CNAME record. By setting up such a record, the domain name being pointed loses all of its records (A, MX, etc) and instead, it takes the A record of the domain name it is pointed to. That 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 website you have set up, but it'll also appear in the browser address bar at all times. Some other possible uses of a CNAME record are to point all of the 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 instance. The latter will work only by creating a CNAME record for a subdomain due to the fact that this kind of a record created for the main domain address makes it impossible to use e-mail addresses.