The Bank Identification Number (BIN) 639778 is issued by MASTERCARD - MDS FOR EUROPE DEBIT ACQUIRER & NON-EUROPEAN DEBIT ISSUER in PANAMA. This is a MASTERCARD DEBIT card with CIRRUS 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 639778, you can determine: the card network (MASTERCARD), whether it's a credit, debit, or prepaid card (DEBIT), the card level (CIRRUS), the issuing bank (MASTERCARD - MDS FOR EUROPE DEBIT ACQUIRER & NON-EUROPEAN DEBIT ISSUER), and the country of issuance (PANAMA). This information is useful for payment processors, merchants, and fraud prevention systems.