BIN 437519 — Lookup & Card Details

BIN 437519 is issued by Banque Internationale D'Investissement Sa, from Mauritania, on the Visa network, as a debit card.

A Bank Identification Number (BIN, or Issuer Identification Number / IIN) is the first 6 to 8 digits of any payment card. It tells the payment network which institution issued the card, what kind of card it is, and where it was issued. For BIN 437519, that institution is Banque Internationale D'Investissement Sa in Mauritania. The card runs on the Visa network. Transactions settle in MRU.

Visa is the world's largest card network, with cards beginning with the digit 4 and accepted in virtually every country.

In practice this prefix is what a checkout sees first — risk engines score it, gateways route on it, and merchants use it to decide whether to accept the card class at all. BIN 437519 is institutional data under the ISO/IEC 7812 standard — looking it up reveals the issuing program, nothing about any cardholder.