There are 2 services you need for a functioning web site - a domain and a hosting plan for it. Whenever you type the domain address in your web browser, you see the content that is uploaded inside the hosting account, but if that Internet domain isn't linked to such an account or to an e-mail service, it's parked. To put it differently, the Internet domain is registered and you're its owner, but it does not have any content of its own. Instead, it can open either a pre-made “Under Construction / For Sale” webpage from the registrar company, or it can be directed to some other URL of your choice. The advantage of parking a domain name is that you can keep it and make sure that no one else is going to take it. At the same time, it will not occupy a slot for a hosted domain name within your account. In addition, you can park domains if you have a .com, for example, and you register domain names with other extensions like .net, .org or country-code ones to direct them to the main site so as to protect a brand name.