If you want to point a domain name that you have to some other 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 forth) and instead, it takes the A record of the domain name it is directed to. By doing this, 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 directed to the website you have set up, but it'll also appear in the Internet browser address bar at all times. Other possible uses of a CNAME record are to forward all of the targeted traffic from various subdomains to their main 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 creating a CNAME record for a subdomain simply because this kind of a record set up for the main domain address renders it impossible to use e-mail addresses.