There are lots of ways to direct a domain to an alternative domain or subdomain and one of them is by setting up a CNAME record. In case you own a domain and you've created a site using some on-line service that provides you with a service subdomain, you could easily link the two by setting up a CNAME record for your-domain.com that directs to subdomain.provider.com. What you'll achieve by doing this is that www.your-domain.com will 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 set up 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 company and functioning email addresses 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 company.