A parked domain is one which is taken, however it's not associated with another service - web or email hosting. Basically, this type of domain name will not load any real content if you type it inside a browser, but nobody can take it as you have already registered it and you are its owner. The advantage of getting a domain and parking it afterwards is that you’re able to keep it and not worry that somebody else could possibly register it in the meantime if, for instance, the website for it is not ready yet. You are able to set a short-term Under Construction page for a parked domain address while you are working on your website, or direct it to some other web address - temporarily or permanently. The latter option can be used when you have already registered domain.com, for example, and you acquire domain.net and domain.org, so that you can protect a brand name or a trademark. In cases like this, the .net and .org domain addresses can be parked and forwarded to the .com as you do not need different sites for them.