In case you have a number of domain names with different extensions and you would like all of them to open the same website, you could have the site under one of them and forward the others. There are several methods to forward one domain name to another, such as the so-called domain parking. When your website hosting plan allows it, though, it will 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 name is hosted, you may still have content for it, set up subdomains, email addresses, and so forth., while with a parked domain you are unable to do any of those things. As an example, if you're building localized websites under different country-code domain names, you will be able to work on them, but meanwhile, visitors shall be forwarded to the primary Internet site.