Registering a domain name and hosting one is sometimes mistaken by many people to be one and the same thing. They are actually 2 separate services - the domain name registration is the actual name and nothing else, while the hosted domains feature refers to the amount of already registered domain names which you can accommodate in the same hosting account and have site files and email messages for them. Your websites will work in exactly the same way no matter whether the domain addresses are registered and hosted at the same place or are registered with company A and pointed to company B. Simply registering a domain name without hosting it will grant you ownership, but will not enable you to have a website if you don't host this domain address in some account so that records for it are created and it starts opening the information from that account.