The Bank Identification Number (BIN) 421680 is issued by DAH SING BANK, LIMITED in HONG KONG. This is a VISA DEBIT card with PREPAID CLASSIC 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 421680, you can determine: the card network (VISA), whether it's a credit, debit, or prepaid card (DEBIT), the card level (PREPAID CLASSIC), the issuing bank (DAH SING BANK, LIMITED), and the country of issuance (HONG KONG). This information is useful for payment processors, merchants, and fraud prevention systems.