If you want to register a domain name to ensure that nobody else will take it, however, you haven't built the site for it yet, you may park it. That is a feature that registrar companies offer whenever a domain name isn't linked to any web or e mail hosting service. By doing this, you'll be able to protect a brand name, for example, and you will own the domain address in question even though it will not load any content. If you'd like, you can select some standard template that the registrar offers, like For Sale or Under Construction, you can also direct the domain name to another web address. Your second option is extremely helpful in case you own a few domains, 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 direct them to domain.com. In this example, you'll need hosting for the third domain only and the traffic to the other ones is going to be redirected to it.