The domain for businesses in Australia.
The net.au domain is for commercial enterprises and trademark owners or applicants Down Under, and carries the same global credibility as a .com. This domain is the best choice for Australia-based businesses and international companies with products to offer Australia. If your .com.au business has a technical arm, you could register a net.au domain for that division. But it isn't just for IT businesses, .net.au is for any kind of company.
Brand your products with .net.au
Register as many .net.au domain names as you like for the separate products and services of your Australian customers, to help people find you more easily online. Although .net is available for anyone, .au is only for businesses registered in Australia. The good news is that all Australian businesses are indeed eligible for the .net.au domain.