A parked domain is one that is taken, but it is not associated with any other service - web or email hosting. Put simply, this type of domain address will not open any real content if you type it within a browser, but nobody can take it as you've already registered it and you are its owner. The benefit of getting a domain and parking it afterwards is the fact that you’re able to keep it and not worry that somebody else might register it meanwhile if, for instance, the site for it is not ready yet. You are able to set a short-term Under Construction website page for a parked domain while you're working on your web site, or direct it to some other web address - temporarily or permanently. The second option can be used if you have already registered domain.com, for example, and you acquire domain.net and domain.org, in order to protect a brand name or a trademark. In cases like this, the .net and .org domain names can be parked and forwarded to the .com as you don't need individual websites for them.