IBAN or SWIFT codes are different systems used to identify banks when transferring money overseas. At least 79 countries use IBAN, mainly in Europe and the Middle East. Banks in around 200 countries ...
NAB tells overseas senders to use NATAAU3303M when sending money to a NAB account. The shorter 8-character code NATAAU33 will also route a payment, but the full 11-character code helps prevent delays.