There are various ways to point a domain address to an alternative domain or subdomain and one of them is by setting up a CNAME record. When you own a domain name and you've created a site through some online service that provides you with a service subdomain, you could easily link the two by creating 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 will be in the web browser address bar while it opens the already mentioned Internet site from the servers of the third-party provider. It is very 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 working e-mail address with another. The CNAME record is always an alpha string, not a number, and in some cases more configuration may be necessary with the other company.