The Bank Identification Number (BIN) 421057 is issued by PT BANK MANDIRI (PERSERO) in INDONESIA. This is a VISA CREDIT card with Unknown 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 421057, you can determine: the card network (VISA), whether it's a credit, debit, or prepaid card (CREDIT), the card level (Unknown), the issuing bank (PT BANK MANDIRI (PERSERO)), and the country of issuance (INDONESIA). This information is useful for payment processors, merchants, and fraud prevention systems.