In case you have a few domains with different extensions and you need all of them to open the very same Internet site, you may have the site under one of them and redirect the rest. There are different ways to redirect one domain name to another, including the so-called domain parking. When your website hosting package deal permits 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 could still have content for it, set up subdomains, email addresses, and many others., while with a parked domain you are unable to do any of those things. For example, if you're building localized websites under different country-code domain names, you'll be able to work on them, but meanwhile, people shall be redirected to the main Internet site.