When you have a few domain names with different extensions and you want all of them to open the exact same website, you can have the site under one of them and forward all the rest. There are a number of ways to redirect one Internet domain name to another, including the so-called domain parking. When your web hosting plan permits it, though, it'll be better if you host all of the domains and set up a URL redirect, not a domain redirect. The primary difference between the two is that while a domain address is hosted, you could still have content for it, set up subdomains, e mail addresses, and so on., while with a parked domain it's not possible to do any of those things. For instance, if you're building localized websites under several country-code domain names, you shall be able to work on them, but meanwhile, people shall be redirected to the main website.