There are various ways to direct a domain address to an alternative domain or subdomain and one of them is by creating a CNAME record. In case you own a domain name and you have developed a website through some online service which provides you with a service subdomain, you could easily link the two by creating a CNAME record for your-domain.com that points to subdomain.provider.com. What you will achieve as a result is that www.your-domain.com will be in the browser address bar while it opens the already mentioned site from the servers of the third-party company. You should 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 company and working email addresses with a different one. The CNAME record is always an alpha string, not a number, and frequently additional configuration may be required with the other provider.