If you have a number of domains with different extensions and you want all of them to open precisely the same Internet site, you could have the site under one of them and forward the rest. There are a number of methods to forward one domain name to another, like the so-called domain parking. When your hosting plan permits it, though, it'll be better if you host each of the domains and create a URL redirect, not a domain redirect. The primary difference between the two is that while a domain address is hosted, you may still have content for it, create subdomains, email addresses, and many others., while with a parked domain you can't do any of those things. As an example, if you're building localized sites under various country-code Internet domain names, you will be able to work on them, but in the meantime, people will be forwarded to the main website.