If you would like to point a domain that you have to some other domain name or subdomain, a good way to do this would be to use a CNAME record. By creating such a record, the domain name being redirected loses all its records (A, MX, and so on) and instead, it takes the A record of the Internet domain it is redirected 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 name and not only will it be directed to the website you have set up, but it'll also be displayed 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 instance. 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 address makes it impossible to use email addresses.