If you want to forward a domain address that you have to a different domain or subdomain, one way to do that would be to use a CNAME record. By setting up such a record, the domain address being forwarded loses all its records (A, MX, and so forth) and instead, it takes the A record of the Internet domain it is pointed 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 which you have created, but it'll also appear in the Internet browser address bar at all times. Other possible uses of a CNAME record are to forward all the traffic from various subdomains to their main domain address, 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 this type of a record set up for the main domain address renders it impossible to use email addresses.