Any .org.au domain has to be a registered Australian not-for-profit (there are currently 11 allowed types). Similarly, any .com.au or .net.au domain has to be a

Any .org.au domain has to be a registered Australian not-for-profit (there are currently 11 allowed types). Similarly, any .com.au or .net.au domain has to be a registered Australian business. I assume various other countries are similarly strict about legitimacy of domain ownership, I've never checked. And yes, I know, these TLDs have nothing to do with .org / .com / .net, as such, except that they look similar. So, for .org.x domains for certain x at least, it does mean credible.