There are lots of ways to point a domain to an alternative domain or subdomain and one of them is by setting up a CNAME record. If you own a domain and you've developed a site through some online service which supplies 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'll achieve in this way 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 provider. It is essential to know that if you set up 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 functioning email addresses with another one. The CNAME record is always an alpha string, not a number, and often additional configuration may be necessary with the other company.