Check a column of IBANs against the bank registers. Your own key: 25 checks/month without email; claim the same key for 200/month. No card.
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=IBAN_VALID(A2:A200) TRUE / FALSE=IBAN_BANK(A2:A200) bank named by the register=IBAN_BIC(A2:A200) BIC=IBAN_CHECK(A2:A200) valid, bank, BIC, verdict, SEPAOne request per IBAN, sent in batches of 100. Results are cached six hours, so recalculating does not pay twice. French: IBAN_VALIDE, IBAN_BANQUE, IBAN_CONTROLE. German: IBAN_GUELTIG, IBAN_BANKNAME, IBAN_PRUEFUNG.