In case you have several domains with different extensions and you want all of them to open precisely the same website, you may have the Internet site under one of them and forward the rest. There are various approaches to forward one domain to another, like the so-called domain parking. If your website hosting package deal allows it, though, it will be better if you host each of the domains and set up a URL redirect, not a domain redirect. The difference between the two is that while a domain address is hosted, you can still have content for it, create subdomains, e-mail addresses, and so on., while with a parked domain it's not possible to do any of these things. As an example, if you're building localized Internet sites under several country-code domains, you shall be able to work on them, but at the same time, people will be redirected to the main site.