If you wish to direct a domain that you have to another domain name or subdomain, a good way to do this would be to use a CNAME record. By setting up such a record, the domain being redirected loses all its records (A, MX, and so forth) and instead, it takes the A record of the domain address it's pointed to. This way, 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 website that you have set up, but it'll also appear in the Internet browser address bar at all times. Other possible uses of a CNAME record are to redirect all the visitors from various 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 creating a CNAME record for a subdomain since such a record set up for the main domain name renders it impossible to use email addresses.