There are various 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 name and you have created a site through some online service that provides you with a service subdomain, you can easily link the two by setting up a CNAME record for your-domain.com that redirects to subdomain.provider.com. What you are going to 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 site from the servers of the third-party provider. You should know that if you set up a CNAME record, any other records your domain address may have will stop functioning, so you cannot have both a CNAME record pointing to one company and functioning email addresses with another one. The CNAME record is always an alpha string, not a number, and frequently additional configuration may be required with the other provider.