There are 2 services you need for a working website - a domain name and a website hosting plan for it. Each time you type the domain address in your Internet browser, you see the content that is uploaded inside the website hosting account, but if that domain address isn't linked to such an account or to an e-mail service, it is parked. To put it differently, the domain 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 directed to any other URL of your choice. The main benefit of parking a domain address is that you can keep it and make sure that no one else will take it. At the same time, it will not block a slot for a hosted domain address inside your account. You may also park domains if you have a .com, for instance, and you register domain addresses with other extensions like .net, .org or country-code ones to forward them to the main website so as to protect a brand name.