The Bank Identification Number (BIN) 523402 is issued by CITIBANK KOREA INC. in KOREA, REPUBLIC OF. This is a MASTERCARD CREDIT card with CORPORATE 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 523402, you can determine: the card network (MASTERCARD), whether it's a credit, debit, or prepaid card (CREDIT), the card level (CORPORATE), the issuing bank (CITIBANK KOREA INC.), and the country of issuance (KOREA, REPUBLIC OF). This information is useful for payment processors, merchants, and fraud prevention systems.