BIN 553201 is issued by Treezor Sas, from Spain, on the mastercard network, as a prepaid 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 553201, that institution is Treezor Sas in Spain. The card runs on the mastercard network. Transactions settle in EUR.
Merchants, fraud teams, ad platforms and developers use BIN data to route transactions, localize checkout, detect chargebacks and decide which card products they accept. BIN 553201 itself is public metadata — it identifies the issuer, not the cardholder.
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