There are two separate services that you’ll need for a functioning web site - a domain name plus a hosting plan for it. Each time you type the Internet domain in your Internet browser, you see the content that’s uploaded in the website 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 address is registered and you are 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 could be directed to any other URL of your choice. The main advantage of parking a domain is that you can keep it and ensure that nobody else is going to take it. Meanwhile, it's not going to take a slot for a hosted domain name in your account. You may also park domains if you have a .com, for instance, and you register domains with other extensions such as .net, .org or country-code ones to forward them to the main web site in order to protect a brand name.