In order to make a web site, you need 2 things - your own domain and a hosting plan for it. The domain registration is the actual web address that you enter in a web browser to reach a site, while the hosting space is where your website data will be. These are two closely related, yet independent services, even though many people believe that registering the domain is enough. Just like the disk space and the monthly traffic features which a given hosting plan offers, there are a certain number of registered domains which you can include as hosted i.e. you can have the web content for them in some account even when the domains are in fact registered using a different company. In technical terms, it does not matter whether a domain is registered and hosted with the same company or is registered with one company and directed to another one - either way your sites will operate the very same way.