When you have a number of domains with different extensions and you want all of them to open the very same site, you may have the site under one of them and forward all the rest. There are several approaches to redirect one domain name to another, such as the so-called domain parking. If your website hosting package deal allows it, though, it shall 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 is hosted, you may still have content for it, create subdomains, e-mail addresses, and so on., while with a parked domain you are unable to do any of those things. For example, if you are building localized sites under various country-code domains, you will be able to work on them, but in the meantime, visitors will be forwarded to the primary website.