There are many ways to point a domain name to another domain or subdomain and one of them is by creating a CNAME record. In case you own a domain and you have created a website using some on-line service that provides you with a service subdomain, you can easily link the two by setting up a CNAME record for your-domain.com that directs to subdomain.provider.com. What you will achieve as a result is that www.your-domain.com is going to be in the browser address bar while it opens the already mentioned site from the servers of the third-party company. You should know that if you set up a CNAME record, any other records your domain may have will stop functioning, so you can't have both a CNAME record directing to one company and working e-mail address with another. The CNAME record is always an alpha string, not a number, and sometimes additional configuration may be necessary with the other company.