There are numerous ways to point a domain to an alternative domain or subdomain and one of them is by creating a CNAME record. When you own a domain and you've set up a site using 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're going to achieve by doing this is that www.your-domain.com will be in the browser address bar while it opens the already mentioned website from the servers of the third-party company. It is very important to know that if you set up a CNAME record, any other records your domain address may have will stop functioning, so you cannot have both a CNAME record pointing to one provider and functioning e-mail address with another one. The CNAME record is always an alpha string, not a number, and often additional configuration may be required with the other provider.