If you want to point 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 being pointed loses all its records (A, MX, and so on) and instead, it takes the A record of the domain it is forwarded 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 Internet site you have set up, but it'll also appear in the web browser address bar at all times. Other possible uses of a CNAME record are to direct all the traffic from various subdomains to their main domain address, or to use the webmail service of your hosting company by using webmail.your-doman.com, for instance. The latter will work only by setting up a CNAME record for a subdomain since such a record created for the main domain name makes it impossible to use email addresses.