There are numerous ways to redirect a domain name to an alternative domain or subdomain and one of them is by setting up a CNAME record. In case you own a domain and you've created a site using some online service which provides 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 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 website 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 may have will stop functioning, so you cannot have both a CNAME record pointing to one company and working email addresses with a different one. The CNAME record is always an alpha string, not a number, and frequently further configuration may be required with the other company.