There are several ways to point a domain to a different domain or subdomain and one of them is by setting up a CNAME record. If you own a domain and you have created a site through some on-line service which supplies you with a service subdomain, you can easily link the two by creating a CNAME record for your-domain.com that points to subdomain.provider.com. What you are going to achieve in this way is that www.your-domain.com is going to be in the browser address bar while it opens the already mentioned site from the servers of the third-party company. You should know that if you set up a CNAME record, any other records your domain may have will stop functioning, so you cannot have both a CNAME record directing to one company and working email addresses with a different one. The CNAME record is always an alpha string, not a number, and in some cases more configuration may be required with the other provider.