40 years of .au
For four decades, .au has served Australian and global internet users, underpinning Australia’s digital economy and society.

5 March 2026 marks 40 years of .au – a signal of trust online that connects millions of local and global internet users to .au websites and email addresses.

As digital technologies have transformed our lives, .au has supported Australians and Australian businesses with a trusted, recognisable online identity. In 2026, four decades since its introduction, .au is more important than ever, providing a stable foundation for innovation and emerging technologies to support Australia’s digital future.
History of .au




















How .au supports all Australians








