There are several ways to direct a domain name to another domain or subdomain and one of them is by setting up a CNAME record. In case you own a domain and you've set up a website using some on-line service which provides you with a service subdomain, you can easily link the two by creating a CNAME record for your-domain.com that redirects to subdomain.provider.com. What you'll achieve in this way is that www.your-domain.com is going to be in the web browser address bar while it opens the already mentioned site from the servers of the third-party provider. It is important to know that if you create a CNAME record, any other records your domain name may have will stop functioning, so you can't have both a CNAME record pointing to one provider and functioning e-mail address with another one. The CNAME record is always an alpha string, not a number, and often additional configuration may be necessary with the other provider.