If you would like to point a domain address that you have to a different domain name or subdomain, the best way to do this would be to use a CNAME record. By creating such a record, the domain address being redirected loses all of its records (A, MX, etc) and instead, it takes the A record of the domain name it is pointed to. By doing this, if you are using a web design service by some provider that gives you a subdomain, you can use an actual domain and not only will it be redirected to the website that you've created, but it'll also appear in the web browser address bar at all times. Some other possible uses of a CNAME record are to redirect all of the traffic from different subdomains to their main domain address, or to use the webmail service of your hosting company by using webmail.your-doman.com, for instance. The latter will work only by creating a CNAME record for a subdomain since such a record set up for the main domain address renders it impossible to use e-mail addresses.