The Bank Identification Number (BIN) 639000 is issued by NATIONWIDE BUILDING SOCIETY in UNITED KINGDOM. This is a MAESTRO 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 639000, you can determine: the card network (MAESTRO), whether it's a credit, debit, or prepaid card (DEBIT), the card level (CIRRUS), the issuing bank (NATIONWIDE BUILDING SOCIETY), and the country of issuance (UNITED KINGDOM). This information is useful for payment processors, merchants, and fraud prevention systems.