ACN Validator
Validate Australian Company Numbers (ACN) using the official ASIC check-digit algorithm.
TOOL ASIC Format Check
An ACN is a 9-digit number issued by ASIC to every company registered in Australia.
How to use ACN Validator
1
Enter ACN
Type or paste a 9-digit ACN.
2
Validate
Run the ASIC check-digit calculation.
3
Review result
See valid/invalid status and formatted ACN.