In order to create a website, you need 2 things - a domain name and a website hosting plan for it. The domain registration is the actual website address that you type in a web browser to reach a site, while the hosting space is where your site data will be. These are 2 very closely related, but separate services, while many people assume that registering the domain is enough. Much like the disk space and the monthly traffic features which a given web hosting plan has, there are a certain number of registered domain names which you can add as hosted which means that you can have the web content for them in some account even when the domains have been registered using a different firm. In technical terms, it doesn't matter whether a domain is registered and hosted using the same company or is registered with one company and pointed to another one - in either case your sites will operate in exactly the same way.