IBANgen Lab · Validate

Payment data validators

Check single IBANs, whole lists and supplier payment files, and verify US ABA routing numbers against published ACH and wire evidence. Results explain every failure, so you know whether the problem is format, checksum or bank data.

Validate: questions

What does IBAN validation check?

Country format and length, allowed characters, the MOD-97 checksum and, where available, the national check digits, bank and BIC.

Does a valid IBAN prove the account exists?

No. Validation proves the number is well-formed. Account existence needs the bank or a payee-verification service.

More in the Lab