If you would like to direct a domain name that you have to some other domain name or subdomain, the best way to do that would be to use a CNAME record. By creating such a record, the domain address being pointed loses all its records (A, MX, etc) and instead, it takes the A record of the Internet domain it is directed to. In this way, if you are using a web design service by some provider that gives you a subdomain, you can use an actual domain name and not only will it be directed to the website that you've created, but it'll also appear in the Internet browser address bar at all times. Alternative possible uses of a CNAME record are to point all of the targeted traffic from different subdomains to their main domain address, 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 simply because this kind of a record set up for the main domain name makes it impossible to use email addresses.