There are several ways to redirect a domain to another domain or subdomain and one of them is by creating a CNAME record. In case you own a domain and you have developed 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 points to subdomain.provider.com. What you're going to achieve in this way is that www.your-domain.com will be in the browser address bar while it opens the already mentioned website from the servers of the third-party provider. It is very important to know that if you create a CNAME record, any other records your domain may have will stop functioning, so you cannot have both a CNAME record pointing to one company and functioning email addresses with a different one. The CNAME record is always an alpha string, not a number, and sometimes additional configuration may be required with the other provider.