National-Bank Checker
Validate IBANs that claim to relate to National-Bank. The checker validates country structure, length and MOD-97 checksum, then compares visible BIC and bank metadata when available.
Validation results
ReadyGermany IBAN format, bank codes and checks
Paste one or more IBANs above to check length, structure and MOD-97 checksum and to see the bank and BIC behind each number.
How the Germany IBAN checker works
- Length and structure: 22 characters and the DE BBAN layout ().
- IBAN check digits: the ISO 13616 MOD-97 checksum, which catches any single typo.
- Bank and BIC: the bank code is matched to the bank and its BIC/SWIFT code (three free bank lookups a day; unlimited with paid access).
A valid result means the IBAN is well-formed. Only the bank, or a Verification of Payee check at payment time, confirms that the account exists and who holds it. Where the bank codes come from: IBAN data sources and methodology.
Need test data instead?
The Germany IBAN generator creates checksum-valid synthetic IBANs .
Have a bank code and account number?
The Germany IBAN calculator builds the IBAN with its check digits. For code, use the IBAN validation API or browse every country checker.
Disclaimer
IBANgen is not a bank or payment provider. Validation results, SWIFT/BIC previews and bank metadata are intended for testing, QA, staging, education and development workflows only.