Australia Centrelink CRN Validator
Validate Centrelink CRN Australia. Verify format and check digits online.
How is the Centrelink CRN validated?
The Customer Reference Number (CRN) is a unique identifier assigned by Centrelink to individuals receiving social security services or benefits. It contains 9 digits and a trailing check letter.
Our tool calculates the check letter using a weighted Modulo 11 checksum mapped to a static array of alphabetic control values.