There are several ways to redirect a domain to an alternative domain or subdomain and one of them is by creating a CNAME record. If you own a domain and you have developed a site using some on-line service which provides you with a service subdomain, you could easily link the two by setting up a CNAME record for your-domain.com that points to subdomain.provider.com. What you are 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 provider. It is very important to know that if you create a CNAME record, any other records your domain name may have will stop functioning, so you can't have both a CNAME record pointing to one provider and working e-mail address with another. The CNAME record is always an alpha string, not a number, and in some cases additional configuration may be necessary with the other provider.