The Bank Identification Number (BIN) 521664 is issued by AIRPLUS INTERNATIONAL GMBH in UNITED KINGDOM. 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 521664, you can determine: the card network (MASTERCARD), whether it's a credit, debit, or prepaid card (CREDIT), the card level (CORPORATE), the issuing bank (AIRPLUS INTERNATIONAL GMBH), and the country of issuance (UNITED KINGDOM). This information is useful for payment processors, merchants, and fraud prevention systems.