If you have a number of domains with different extensions and you need all of them to open the exact same website, you may have the Internet site under one of them and redirect the rest. There are various approaches to redirect one domain name to another, among them the so-called domain parking. When your website hosting plan allows it, though, it'll be better if you host each of the domains and create a URL redirect, not a domain redirect. The primary difference between the two is that while a domain is hosted, you could still have content for it, create subdomains, e-mail addresses, etc., while with a parked domain you can't do any of these things. As an example, if you are building localized sites under various country-code domains, you will be able to work on them, but meanwhile, visitors will be forwarded to the primary site.