There are many ways to direct a domain 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 have set up a site through 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 directs to subdomain.provider.com. What you'll achieve with this is that www.your-domain.com will be in the browser address bar while it opens the already mentioned Internet site from the servers of the third-party company. It is very important to know that if you create a CNAME record, any other records your domain address may have will stop working, 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 further configuration may be required with the other provider.