If you would like to forward a domain name that you have to a different domain name or subdomain, a good way to do that would be to use a CNAME record. By creating such a record, the domain name being redirected loses all its records (A, MX, and so on) and instead, it takes the A record of the domain it's pointed to. In this 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 site which 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 of the traffic from different subdomains to their main Internet 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 such a record created for the main domain renders it impossible to use email addresses.
