If you'd like to register a domain name to ensure that no one else is going to take it, however, you haven't built the site for it yet, you may park it. That is a feature that registrar companies offer if a domain is not linked to any web or e mail hosting service. That way, you'll be able to protect a brand name, for example, and you will own the domain name in question although it won't load any content. If you'd like, you can choose some default template that the registrar offers, like For Sale or Under Construction, or you can direct the domain name to a new web address. Your second option is very useful if you own a few domains, but you want each and every one of them to open the same website. As an illustration, 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 is going to be redirected to it.