If you want to point a domain address that you have to another domain name or subdomain, one way to do this would be to use a CNAME record. By creating such a record, the domain being redirected loses all of its records (A, MX, and so on) and instead, it takes the A record of the domain it is redirected to. By doing this, if you use a web design service by some company that gives you a subdomain, you can use an actual domain and not only will it be pointed to the Internet site you have set up, but it will also be displayed in the Internet browser address bar at all times. Some 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 webhosting company by using webmail.your-doman.com, for example. The latter will work only by creating a CNAME record for a subdomain due to the fact that this kind of a record created for the main domain address makes it impossible to use e-mail addresses.
