There are two services that you’ll need for a functioning website - a domain plus a web hosting plan for it. Each time you type the domain address in your Internet browser, you see the content that is uploaded in the web hosting account, but if that domain isn't linked to such an account or to an email service, it's parked. Put simply, the domain address is registered and you are its owner, but it does not have any content of its own. Rather, it can open either a pre-made “Under Construction / For Sale” webpage from the registrar company, or it could be directed to any other URL of your choice. The benefit of parking a domain is that you can keep it and make sure that no one else is going to take it. At the same time, it's not going to occupy a slot for a hosted Internet domain within your account. You can also park domains if you have a .com, for example, and you register domain addresses with other extensions such as .net, .org or country-code ones to forward them to the main website as a way to protect a brand name.