There are several ways to point a domain address to another domain or subdomain and one of them is by setting up a CNAME record. If you own a domain and you have created a site using some on-line service which provides you with a service subdomain, you could easily link the two by creating a CNAME record for your-domain.com that points to subdomain.provider.com. What you're going to achieve by doing this is that www.your-domain.com will be in the Internet browser address bar while it opens the already mentioned website from the servers of the third-party company. You should 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 directing to one company and working email addresses with another. The CNAME record is always an alpha string, not a number, and frequently further configuration may be necessary with the other provider.