The Bank Identification Number (BIN) 557604 is issued by BANCO AZTECA S.A. INSTITUCION DE BANCA MULTIPLE in MEXICO. This is a MASTERCARD CREDIT card with MICRO BUSINESS level.
BIN (Bank Identification Number), also known as IIN (Issuer Identification Number), refers to the first 6 digits of a payment card number. These digits identify the card-issuing institution, card type, and other attributes used for routing and fraud prevention.
By looking up BIN 557604, you can determine: the card network (MASTERCARD), whether it's a credit, debit, or prepaid card (CREDIT), the card level (MICRO BUSINESS), the issuing bank (BANCO AZTECA S.A. INSTITUCION DE BANCA MULTIPLE), and the country of issuance (MEXICO). This information is useful for payment processors, merchants, and fraud prevention systems.