If you have a number of domain names with different extensions and you need all of them to open the very same Internet site, you can have the site under one of them and redirect all the rest. There are various approaches to forward one domain to another, like the so-called domain parking. When your hosting package permits it, though, it shall be better if you host each of the domains and set up a URL redirect, not a domain redirect. The primary difference between the two is that while a domain name is hosted, you may still have content for it, create subdomains, e-mail addresses, and so forth., while with a parked domain you are unable to do any of those things. As an illustration, if you're building localized sites under different country-code Internet domain names, you'll be able to work on them, but meanwhile, people shall be redirected to the main Internet site.