The hosted domains feature of a hosting account indicates the number of registered domains that you could add within the very same account. Registering a domain address and hosting it are 2 different services even though many people consider them to be the very same thing. While the registration signifies that you become the owner of a given domain address, the hosting aspect is what actually allows you to have a site because this is where your data and email messages are going to be. As these are 2 independent services, you can register a new domain name with one company and host it with another by modifying its name servers (DNS) - the domain is going to work in the exact same way just as if it was registered and hosted using the same company. Also, it is extremely important to know that changing the hosting means directing the domain name to an alternative company and not transferring it.