There are numerous ways to direct a domain to another domain or subdomain and one of them is by creating a CNAME record. In case you own a domain name and you have created a website through some on-line service which supplies 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 are going to achieve by doing this 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 provider. You should know that if you set up a CNAME record, any other records your domain may have will stop functioning, so you can't have both a CNAME record directing to one provider and working e-mail address with a different one. The CNAME record is always an alpha string, not a number, and often further configuration may be necessary with the other provider.