If you would like to direct a domain name 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 setting up such a record, the domain being forwarded loses all its records (A, MX, and so on) and instead, it takes the A record of the domain 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 that you've created, but it will also appear in the browser address bar at all times. Other possible uses of a CNAME record are to point all the visitors from different subdomains to their main domain, or to use the webmail service of your hosting provider by using webmail.your-doman.com, for instance. The latter will work only by creating a CNAME record for a subdomain because this kind of a record created for the main domain makes it impossible to use email addresses.
