There are several ways to redirect a domain address to an alternative domain or subdomain and one of them is by creating a CNAME record. When you own a domain name and you have set up a website using some online service which supplies you with a service subdomain, you can easily link the two by setting up a CNAME record for your-domain.com that points to subdomain.provider.com. What you're going to achieve by doing this is that www.your-domain.com is going to be in the Internet browser address bar while it opens the already mentioned Internet 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 name may have will stop working, so you can't have both a CNAME record pointing to one provider and functioning e-mail address with another one. The CNAME record is always an alpha string, not a number, and in some cases further configuration may be necessary with the other provider.