The hosted domains feature of a website hosting account refers to the amount of registered domain names which you can include within the same account. Registering a domain and hosting it are two different services although a lot of people consider them to be the same thing. While the registration signifies that you become the owner of a given domain address, the hosting aspect is what really permits you to have a site because this is where your files and email messages will be. Because these are 2 different services, you can register a new domain 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 as if it was registered and hosted with the exact same company. Also, it is very important to know that changing the hosting means directing the domain to an alternative company and not transferring it.