The Bank Identification Number (BIN) 521731 is issued by SHINHAN VIETNAM FINANCE COMPANY LIMITED in VIET NAM. This is a MASTERCARD DEBIT card with GOLD 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 521731, you can determine: the card network (MASTERCARD), whether it's a credit, debit, or prepaid card (DEBIT), the card level (GOLD), the issuing bank (SHINHAN VIETNAM FINANCE COMPANY LIMITED), and the country of issuance (VIET NAM). This information is useful for payment processors, merchants, and fraud prevention systems.