The Bank Identification Number (BIN) 543109 is issued by MADURO & CURIEL'S BANK N.V. in SINT MAARTEN (DUTCH PART). This is a MASTERCARD DEBIT card with 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 543109, you can determine: the card network (MASTERCARD), whether it's a credit, debit, or prepaid card (DEBIT), the card level (BUSINESS), the issuing bank (MADURO & CURIEL'S BANK N.V.), and the country of issuance (SINT MAARTEN (DUTCH PART)). This information is useful for payment processors, merchants, and fraud prevention systems.