There are many ways to redirect a domain name to an alternative domain or subdomain and one of them is by creating a CNAME record. When you own a domain and you've developed a site through some on-line service that 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 very important 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 pointing to one company 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 required with the other company.