Validates an IBAN from any of 70+ countries: checksum, country length and in-country account structure, and resolves the bank and branch codes.

Most free libraries stop at the mod-97 checksum. That only says the digits are self-consistent — not that the number could exist in that country. This checks the country's BBAN structure too, so a wrong-length or wrong-shaped account is rejected before your payment file reaches the bank. When only the two check digits are wrong, the correct ones are computed and returned as a suggestion, because that is what people actually mistype. Turkish, Dutch and Belgian IBANs additionally resolve to a bank name when the national code is in our table; otherwise bankName is null. This is not a SWIFT directory.

Credits per call: 1 · Operation id: iban_validate

In the GET form every field is a query parameter; object and array fields are JSON-encoded.