If you wish to register a domain to ensure that no one else will take it, but you haven't built the website for it yet, you could park it. That is a feature that registrar companies provide whenever a domain address is not linked to any web or e mail hosting service. This way, you'll be able to protect a brand name, for instance, and you will own the domain address in question although it won't load any content. If you would like, you can select some standard template that the registrar provides, like For Sale or Under Construction, you can also forward the domain to a new web address. The second option is very helpful in case you own a number of domain names, but you want all of them to open the same website. For instance, you may register domain.net and domain.org, then park them and direct them to domain.com. In this example, you'll need hosting for the third domain only and the traffic to the other ones will be redirected to it.