There are numerous ways to point a domain address to a different domain or subdomain and one of them is by setting up a CNAME record. In case you own a domain name and you have created a site using some online service which 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 are going to achieve in this way is that www.your-domain.com will be in the browser address bar while it opens the already mentioned site from the servers of the third-party provider. It is essential to 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 directing to one provider and working email addresses with another one. The CNAME record is always an alpha string, not a number, and in some cases further configuration may be necessary with the other provider.