The Bank Identification Number (BIN) 545831 is issued by OVERSEAS UNION BANK, LTD. in SINGAPORE. This is a MASTERCARD CREDIT card with Unknown 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 545831, you can determine: the card network (MASTERCARD), whether it's a credit, debit, or prepaid card (CREDIT), the card level (Unknown), the issuing bank (OVERSEAS UNION BANK, LTD.), and the country of issuance (SINGAPORE). This information is useful for payment processors, merchants, and fraud prevention systems.