If you want to point a domain address that you have to some other domain name or subdomain, one of the ways to do this would be to use a CNAME record. By creating such a record, the domain address being pointed loses all its records (A, MX, and so forth) and instead, it takes the A record of the domain it is redirected to. That way, 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 redirected to the Internet site that you have set up, but it will also appear in the browser address bar at all times. Alternative possible uses of a CNAME record are to point all of the traffic from different subdomains to their main domain, 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 address renders it impossible to use e-mail addresses.