Rules for Australia domain registration
.com.au / .net.au
To own a .com.au or .net.au you must be an Australian registered company, or business with a registered business number (ABN, BRN, BN).
The domain name you order should have a solid relationship to the business it represents.
Mazda Motor Company would be reasonably entitled to own:
.org.au / .asn.au
To qualify for these domains your organisation must be a "non-commercial organisation".
The domain name you register should have a solid relationship to the organisation to which it represents.
Red Cross are reasonably entitled to own: