The Bank Identification Number (BIN) 550991 is issued by TEXAS TECH FEDERAL CREDIT UNION in UNITED STATES. This is a MASTERCARD DEBIT card with STANDARD 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 550991, you can determine: the card network (MASTERCARD), whether it's a credit, debit, or prepaid card (DEBIT), the card level (STANDARD), the issuing bank (TEXAS TECH FEDERAL CREDIT UNION), and the country of issuance (UNITED STATES). This information is useful for payment processors, merchants, and fraud prevention systems.