The Bank Identification Number (BIN) 637000 is issued by NANCHONG COMMERCIAL BANK CO., LTD. in CHINA. This is a CHINA UNION PAY Unknown card with IC CARD 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 637000, you can determine: the card network (CHINA UNION PAY), whether it's a credit, debit, or prepaid card (Unknown), the card level (IC CARD), the issuing bank (NANCHONG COMMERCIAL BANK CO., LTD.), and the country of issuance (CHINA). This information is useful for payment processors, merchants, and fraud prevention systems.