There are two services that you need for a working site - a domain name plus a website hosting plan for it. When you type the Internet domain in your Internet browser, you see the content that’s uploaded in the web hosting account, but if that domain is not linked to such an account or to an e-mail service, it's parked. In other words, the domain name is registered and you're its owner, but it does not have any content of its own. As a substitute, it can open either a pre-made “Under Construction / For Sale” Internet page from the registrar company, or it can be directed to some other URL of your choice. The main benefit of parking a domain is that you can keep it and be sure that nobody else is going to take it. Meanwhile, it won't block a slot for a hosted domain name inside your account. In addition, you can park domains if you have a .com, for example, and you register domain addresses with other extensions like .net, .org or country-code ones to direct them to the main website as a way to protect a brand name.