The Bank Identification Number (BIN) 540541 is issued by CITIBANK USA, N.A. in UNITED STATES. This is a MASTERCARD CREDIT card with Unknown 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 540541, you can determine: the card network (MASTERCARD), whether it's a credit, debit, or prepaid card (CREDIT), the card level (Unknown), the issuing bank (CITIBANK USA, N.A.), and the country of issuance (UNITED STATES). This information is useful for payment processors, merchants, and fraud prevention systems.