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BIN 503771 — Lookup & Card Details
Check bank, country, card type, and issuer information for BIN 503771.
What is BIN 503771?
BIN 503771 is on the Maestro / debit network network.
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. The card runs on the Maestro / debit network network.
This BIN falls in the 50/56–69 space used by Maestro and regional debit, store and private-label card programs — ranges that sit outside the major global credit networks but are routed through their own debit rails.
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 503771 is institutional data under the ISO/IEC 7812 standard — looking it up reveals the issuing program, nothing about any cardholder.
BIN 503771, digit by digit
Each position in a BIN carries defined meaning under ISO/IEC 7812. Here is how the 6 digits of 503771 break down.
BIN 503771 — frequently asked questions
Which bank issued BIN 503771?
The live registry lookup doesn't currently return a bank name for BIN 503771. The prefix resolves to the Maestro / debit network network, and issuer details may appear as registries update — newly issued and virtual ranges often lag.
What card network does BIN 503771 run on?
BIN 503771 runs on the Maestro / debit network network. This BIN falls in the 50/56–69 space used by Maestro and regional debit, store and private-label card programs — ranges that sit outside the major global credit networks but are routed through their own debit rails.
Is it legal to look up BIN 503771?
Yes. BIN 503771 is public infrastructure data under the ISO/IEC 7812 standard — it identifies the issuing program, not any cardholder. No personal or account data is involved in a BIN lookup.
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