If you want to register a domain name to make sure that no one else will take it, however, you have not built the website for it yet, you may park it. That is a feature that registrar companies offer whenever a domain name isn't connected to any web or e-mail hosting service. That way, you are able to protect a brand name, for example, and you will own the domain address in question even though it will not open any content. If you wish, you may choose some default template that the registrar offers, such as For Sale or Under Construction, or you can direct the domain name to a new web address. The second option is very helpful if you own a few domains, but you want all of them to open the same site. As an illustration, you can register domain.net and domain.org, then park them and direct them to domain.com. In this example, you will need hosting for the third domain address only and the traffic to the other ones is going to be redirected to it.