If you wish to forward a domain address that you have to some other domain address or subdomain, the best way to do that would be to use a CNAME record. By creating such a record, the domain being forwarded loses all of its records (A, MX, etc) and instead, it takes the A record of the domain address it is pointed to. By doing this, if you use a web design service by some provider that gives you a subdomain, you can use an actual domain name and not only will it be forwarded to the Internet site which you have set up, but it'll also be displayed in the browser address bar at all times. Alternative possible uses of a CNAME record are to point all the targeted traffic from various subdomains to their main domain, or to use the webmail service of your hosting company 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 name makes it impossible to use email addresses.