The Bank Identification Number (BIN) 521585 is issued by BANK OCHRONY SRODOWISKA S.A. (BOS S.A.) in POLAND. This is a MASTERCARD CREDIT card with STANDARD 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 521585, you can determine: the card network (MASTERCARD), whether it's a credit, debit, or prepaid card (CREDIT), the card level (STANDARD), the issuing bank (BANK OCHRONY SRODOWISKA S.A. (BOS S.A.)), and the country of issuance (POLAND). This information is useful for payment processors, merchants, and fraud prevention systems.