The Bank Identification Number (BIN) 555157 is issued by CITIBANK, N.A. in THAILAND. This is a MASTERCARD CREDIT card with PURCHASING 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 555157, you can determine: the card network (MASTERCARD), whether it's a credit, debit, or prepaid card (CREDIT), the card level (PURCHASING), the issuing bank (CITIBANK, N.A.), and the country of issuance (THAILAND). This information is useful for payment processors, merchants, and fraud prevention systems.