The Bank Identification Number (BIN) 521655 is issued by BANK OF CHINA LIMITED in MACAO. This is a MASTERCARD CREDIT card with WORLD ELITE 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 521655, you can determine: the card network (MASTERCARD), whether it's a credit, debit, or prepaid card (CREDIT), the card level (WORLD ELITE), the issuing bank (BANK OF CHINA LIMITED), and the country of issuance (MACAO). This information is useful for payment processors, merchants, and fraud prevention systems.