If you would like to forward a domain that you have to a different domain address or subdomain, the best way to do that would be to use a CNAME record. By creating such a record, the domain address being redirected loses all its records (A, MX, etc) and instead, it takes the A record of the domain it is forwarded to. By doing this, if you are using a web design service by some company that gives you a subdomain, you can use an actual domain name and not only will it be pointed to the site that you have set up, but it will also be displayed in the web browser address bar at all times. Alternative possible uses of a CNAME record are to direct all the visitors from different subdomains to their main Internet 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 setting up a CNAME record for a subdomain due to the fact that such a record created for the main domain makes it impossible to use e-mail addresses.