There are two services that you need for a working site - a domain and a website hosting plan for it. Any time you type the domain in your Internet browser, you see the content that is uploaded inside the hosting account, but if that Internet domain is not linked to such an account or to an email service, it is parked. Put simply, the domain name is registered and you are its owner, but it doesn't have any content of its own. As a substitute, it can open either a pre-made “Under Construction / For Sale” webpage from the registrar company, or it may be forwarded to any other URL of your choice. The advantage of parking a domain name is that you can keep it and ensure that no one else will take it. In the meantime, it will not take a slot for a hosted domain name inside 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 site so as to protect a brand name.