1.) sign up for a free account at cloudflare.com
2.) type in any domain (you don't need to own it)
3.) click "add domain" and wait about a min<p>That's it!<p>I know you can use the command 'dig example.com axfr', but my experience is most domains don't allow zone transfers so this command will fail.<p>Would be interested in learning how cloudflare is able to list this information..