There are two separate services you need for a functioning site - a domain and a website hosting plan for it. Whenever you type the domain address in your Internet browser, you see the content that’s uploaded in the hosting account, but if that domain name is not linked to such an account or to an e-mail service, it's parked. Put simply, the Internet domain is registered and you're its owner, but it doesn't have any content of its own. Rather, it can open either a pre-made “Under Construction / For Sale” Internet page from the registrar company, or it could be directed to any other URL of your choice. The main advantage of parking a domain name is that you can keep it and make certain 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 domain names 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 site so as to protect a brand name.