There are two separate services you'll need for a working web site - a domain name plus a hosting plan for it. Each time you type the Internet domain in your browser, you see the content that’s uploaded inside the hosting account, but if that domain isn't linked to such an account or to an e-mail service, it is parked. To put it differently, the domain address is registered and you're its owner, but it lacks content of its own. As a substitute, it can open either a pre-made “Under Construction / For Sale” page from the registrar company, or it can be directed to any other URL of your choice. The advantage of parking a domain name is that you can keep it and make sure that nobody else will take it. In the meantime, it will not occupy a slot for a hosted domain address within your account. In addition, you can park domains if you have a .com, for instance, and you register domains with other extensions like .net, .org or country-code ones to forward them to the main web site as a way to protect a brand name.