When you have several domain names with different extensions and you need all of them to open exactly the same Internet site, you could have the website under one of them and forward the rest. There are different methods to forward one Internet domain name to another, among them the so-called domain parking. When your website hosting plan permits it, though, it'll be better if you host all the domains and set up a URL redirect, not a domain redirect. The real difference between the two is that while a domain is hosted, you can still have content for it, create subdomains, email addresses, and many others., while with a parked domain you are unable to do any of these things. As an example, if you're building localized Internet sites under different country-code Internet domain names, you will be able to work on them, but meanwhile, visitors shall be redirected to the primary website.