A .com.au and .net.au name is the preferred option for Australian businesses when registering a Domain Name. Quite simply a .com.au and .net.au Domain Name is the best way for Australian businesses to be represented on the web! .com.au and .net.au Domain Names offer instant recognition in the corporate world.

I then forward to them a list of domain name extensions and their meanings.

Source: http://www.domainregistration.com.au/