BIN 553906 — Lookup & Card Details

BIN 553906 is issued by Banco Santander Totta S.A., from Portugal, on the Mastercard 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 553906, that institution is Banco Santander Totta S.A. in Portugal. The card runs on the Mastercard network. Transactions settle in EUR.

Mastercard is a global network whose BINs fall in the 51–55 and 2221–2720 ranges, accepted at merchants worldwide.

Payment processors read these digits on every transaction: they drive routing decisions, currency handling at checkout, fraud scoring and card-product acceptance rules. BIN 553906 carries no personal information: it maps to an issuing institution and card program, never to an individual account or person.