BIN 391021 — Lookup & Card Details

Check bank, country, card type, and issuer information for BIN 391021.

What is BIN 391021?

BIN 391021 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.

Payment processors read these digits on every transaction: they drive routing decisions, currency handling at checkout, fraud scoring and card-product acceptance rules. BIN 391021 carries no personal information: it maps to an issuing institution and card program, never to an individual account or person.

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BIN 391021, digit by digit

Each position in a BIN carries defined meaning under ISO/IEC 7812. Here is how the 6 digits of 391021 break down.

3Major Industry Identifier — Travel & entertainment (Amex, Diners, JCB)

9Issuer range digit 2 of the 6-digit prefix

1Issuer range digit 3 of the 6-digit prefix

0Issuer range digit 4 of the 6-digit prefix

2Issuer range digit 5 of the 6-digit prefix

1Issuer range digit 6 of the 6-digit prefix

BIN 391021 — frequently asked questions

Which bank issued BIN 391021?

The live registry lookup doesn't currently return a bank name for BIN 391021. 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 391021 run on?

BIN 391021 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 391021?

Yes. BIN 391021 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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Browse neighboring BINs — useful when pinpointing a card range.

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