If you want to register a domain to make certain that no one else will take it, but you haven't built the website for it yet, you can park it. This is a feature that registrar companies offer if a domain isn't connected to any web or email hosting service. In this way, you'll be able to protect a brand name, for example, and you'll own the domain address in question even though it will not load any content. If you would like, you can pick some standard template that the registrar provides, such as For Sale or Under Construction, alternatively you can direct the domain to another web address. The second option is very useful if you own a few domains, but you want all of them to open the same site. As an example, you could register domain.net and domain.org, then park them and forward them to domain.com. In this example, you will need hosting for the third domain address only and the traffic to the other ones will be redirected to it.