There are many ways to redirect a domain name to another domain or subdomain and one of them is by creating a CNAME record. If you own a domain and you've set up a site using some online service that provides you with a service subdomain, you can easily link the two by creating a CNAME record for your-domain.com that points to subdomain.provider.com. What you'll 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 company. You should 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 directing to one provider and working email addresses with another. The CNAME record is always an alpha string, not a number, and frequently more configuration may be necessary with the other provider.