There are many ways to point a domain to another domain or subdomain and one of them is by creating a CNAME record. In case you own a domain name and you have set up a website using some online service which supplies you with a service subdomain, you could easily link the two by setting up a CNAME record for your-domain.com that directs to subdomain.provider.com. What you're going to 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 essential to know that if you create a CNAME record, any other records your domain name may have will stop working, so you cannot have both a CNAME record directing to one company and working e-mail address with another one. The CNAME record is always an alpha string, not a number, and often more configuration may be needed with the other company.