There are two separate services that you’ll need for a functioning site - a domain name and a hosting plan for it. When you type the domain name in your Internet browser, you see the content that’s uploaded within the web hosting account, but if that domain address is not linked to such an account or to an email service, it's parked. To put it differently, the domain address is registered and you're its owner, but it lacks content of its own. Instead, it can open either a pre-made “Under Construction / For Sale” page from the registrar company, or it may be forwarded to some other URL of your choice. The advantage of parking a domain is that you can keep it and be sure that nobody else will take it. At the same time, it's not going to take a slot for a hosted domain in your account. You may also park domain names if you have a .com, for instance, and you register domain addresses with other extensions such as .net, .org or country-code ones to direct them to the main site so as to protect a brand name.