The Bank Identification Number (BIN) 552004 is issued by CITIBANK (HONG KONG) LIMITED in HONG KONG. This is a MASTERCARD CREDIT card with WORLD 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 552004, you can determine: the card network (MASTERCARD), whether it's a credit, debit, or prepaid card (CREDIT), the card level (WORLD), the issuing bank (CITIBANK (HONG KONG) LIMITED), and the country of issuance (HONG KONG). This information is useful for payment processors, merchants, and fraud prevention systems.