The Bank Identification Number (BIN) 551721 is issued by TRIPLINK INTERNATIONAL CO.,LIMITED in HONG KONG. 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 551721, you can determine: the card network (MASTERCARD), whether it's a credit, debit, or prepaid card (CREDIT), the card level (CORPORATE), the issuing bank (TRIPLINK INTERNATIONAL CO.,LIMITED), and the country of issuance (HONG KONG). This information is useful for payment processors, merchants, and fraud prevention systems.