The Bank Identification Number (BIN) 544521 is issued by WESTERN UNION INTERNATIONAL BANK GMBH in UNITED KINGDOM. This is a MASTERCARD DEBIT card with PREPAID 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 544521, you can determine: the card network (MASTERCARD), whether it's a credit, debit, or prepaid card (DEBIT), the card level (PREPAID), the issuing bank (WESTERN UNION INTERNATIONAL BANK GMBH), and the country of issuance (UNITED KINGDOM). This information is useful for payment processors, merchants, and fraud prevention systems.