There are 2 services that you need for a functioning site - a domain and a web hosting plan for it. If you type the domain address in your Internet browser, you see the content that’s uploaded within the hosting account, but if that domain name isn't linked to such an account or to an e-mail service, it is parked. Put simply, the domain name 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” webpage from the registrar company, or it can be forwarded to some other URL of your choice. The main advantage of parking a domain is that you can keep it and ensure that no one else will take it. At the same time, it will not block a slot for a hosted domain name within your account. You could also park domains if you have a .com, for instance, and you register domain names with other extensions such as .net, .org or country-code ones to forward them to the main site as a way to protect a brand name.