If you'd like to forward a domain name that you have to another 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 redirected loses all its records (A, MX, and so forth) and instead, it takes the A record of the domain name it's directed to. That way, if you are using 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 directed to the Internet site that you have set up, but it will also be displayed in the web browser address bar at all times. Some other possible uses of a CNAME record are to forward all the traffic from different 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 creating a CNAME record for a subdomain due to the fact that this kind of a record set up for the main domain renders it impossible to use email addresses.