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