If you wish to forward a domain that you have to another domain or subdomain, one way to do that would be to use a CNAME record. By creating such a record, the domain name being forwarded loses all its records (A, MX, and so on) and instead, it takes the A record of the Internet domain it is directed 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 that you have created, but it'll also be displayed in the Internet browser address bar at all times. Some other possible uses of a CNAME record are to direct all the traffic from different subdomains to their main Internet domain, or to use the webmail service of your webhosting company by using webmail.your-doman.com, for example. The latter will work only by setting up a CNAME record for a subdomain because this kind of a record set up for the main domain name makes it impossible to use email addresses.