BIN 391821 — Lookup & Card Details

Check bank, country, card type, and issuer information for BIN 391821.

What is BIN 391821?

BIN 391821 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.

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 391821 itself is public metadata — it identifies the issuer, not the cardholder.

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BIN 391821, digit by digit

Each position in a BIN carries defined meaning under ISO/IEC 7812. Here is how the 6 digits of 391821 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

8Issuer 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 391821 — frequently asked questions

Which bank issued BIN 391821?

The live registry lookup doesn't currently return a bank name for BIN 391821. 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 391821 run on?

BIN 391821 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 391821?

Yes. BIN 391821 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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Related BIN ranges

Browse neighboring BINs — useful when pinpointing a card range.

Lower BINs

391811 391812 391813 391814

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