If you'd like to register a domain to make certain that nobody else is going to take it, however, you have not developed the site for it yet, you may park it. That is a feature that registrar companies provide whenever a domain address isn't linked to any web or email hosting service. That way, you'll be able to protect a brand name, for instance, and you will own the domain in question even though it won't open any content. If you want, you can choose some standard template that the registrar provides, like For Sale or Under Construction, alternatively you can direct the domain name to an alternative web address. The second option is very useful in case you own a number of domain names, but you want every one of them to open the same site. As an illustration, you can register domain.net and domain.org, then park them and forward them to domain.com. In this example, you're going to need hosting for the third domain address only and the traffic to the other ones is going to be redirected to it.