If you have several domain names with different extensions and you want all of them to open precisely the same site, you may have the website under one of them and forward all the rest. There are several ways to forward one Internet domain name to another, including the so-called domain parking. If your web hosting package deal allows it, though, it'll be better if you host all the domains and create a URL redirect, not a domain redirect. The real difference between the two is that while a domain name is hosted, you could still have content for it, set up subdomains, email addresses, and so on., while with a parked domain it's not possible to do any of these things. For instance, if you are building localized websites under different country-code Internet domain names, you shall be able to work on them, but in the meantime, visitors will be redirected to the primary website.