A parked domain name is one that's taken, however it's not linked to another service - web or e-mail hosting. Basically, this kind of domain name will not open any actual content in case you type it in a browser, but nobody can take it as you have already registered it and you are its owner. The best thing about obtaining a domain and parking it afterwards is that you’re able to keep it and not worry that someone else could possibly register it meanwhile if, for example, the site for it is not ready yet. You are able to create a short-term Under Construction website page for a parked domain name while you're working on the website, or forward it to some other web address - temporarily or permanently. The latter option can be used when you have already registered domain.com, for instance, and you obtain domain.net and domain.org, so as to protect a brand name or a trademark. In this situation, the .net and .org domain addresses can be parked and directed to the .com since you do not need separate websites for them.