If you'd like to forward a domain address that you have to another domain name or subdomain, a good way to do this would be to use a CNAME record. By creating such a record, the domain name being redirected loses all of its records (A, MX, etc) and instead, it takes the A record of the domain name it is forwarded to. In this way, if you use a web design service by some company that gives you a subdomain, you can use an actual domain name and not only will it be forwarded to the website 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 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 instance. The latter will work only by creating a CNAME record for a subdomain simply because this type of a record created for the main domain name makes it impossible to use email addresses.