If you wish to forward a domain name that you have to another domain name or subdomain, one of the ways to do that would be to use a CNAME record. By setting up such a record, the domain name being pointed loses all of its records (A, MX, and so on) and instead, it takes the A record of the domain it is forwarded to. By doing this, if you use a web design service by some company that gives you a subdomain, you can use an actual domain and not only will it be directed to the site that you have created, but it'll also appear in the web browser address bar at all times. Some other possible uses of a CNAME record are to point all the traffic from different subdomains to their main domain name, or to use the webmail service of your webhosting company by using webmail.your-doman.com, for instance. 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 address makes it impossible to use e-mail addresses.