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BIN 381731 — Lookup & Card Details
Check bank, country, card type, and issuer information for BIN 381731.
What is BIN 381731?
BIN 381731 is on the Diners Club 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 Diners Club network.
Diners Club International is one of the oldest card networks; its cards are processed over the Discover network in many regions.
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 381731 is institutional data under the ISO/IEC 7812 standard — looking it up reveals the issuing program, nothing about any cardholder.
BIN 381731, digit by digit
Each position in a BIN carries defined meaning under ISO/IEC 7812. Here is how the 6 digits of 381731 break down.
BIN 381731 — frequently asked questions
Which bank issued BIN 381731?
The live registry lookup doesn't currently return a bank name for BIN 381731. The prefix resolves to the Diners Club network, and issuer details may appear as registries update — newly issued and virtual ranges often lag.
What card network does BIN 381731 run on?
BIN 381731 runs on the Diners Club network. Diners Club International is one of the oldest card networks; its cards are processed over the Discover network in many regions.
Is it legal to look up BIN 381731?
Yes. BIN 381731 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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