There are numerous ways to direct a domain address to a different domain or subdomain and one of them is by creating a CNAME record. In case you own a domain name and you've developed a site using some online 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 will achieve as a result is that www.your-domain.com is going to be in the web browser address bar while it opens the already mentioned website from the servers of the third-party provider. It is essential to know that if you set up 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 company and working email addresses 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.