If you have a lot of domains with different extensions and you want all of them to open the very same website, you could have the site under one of them and forward all the rest. There are various approaches to redirect one domain to another, including the so-called domain parking. If your web hosting package deal permits it, though, it will be better if you host each of the domains and create a URL redirect, not a domain redirect. The 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 cannot do any of these things. For instance, if you are building localized Internet sites under several country-code Internet domain names, you will be able to work on them, but in the meantime, people will be redirected to the primary site.