IBAN validator

Every check runs in this tab and nothing is uploaded. The mod 97 step is the ISO 7064 check over the whole IBAN; a pass means the number is internally consistent and the country length and structure match the registry. It does not prove the account exists, and it does not re-check national check digits that live inside the BBAN (a Luhn digit in Finland, 7-3-1 in Estonia, national modulus checks in Denmark, Hungary, Norway and Sweden); those are flagged as footnotes instead of fake passes.