BIN 257821 — Lookup & Card Details

Check bank, country, card type, and issuer information for BIN 257821.

What is BIN 257821?

BIN 257821 is on the Mastercard 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 Mastercard network.

Mastercard is a global network whose BINs fall in the 51–55 and 2221–2720 ranges, accepted at merchants worldwide.

Payment processors read these digits on every transaction: they drive routing decisions, currency handling at checkout, fraud scoring and card-product acceptance rules. BIN 257821 carries no personal information: it maps to an issuing institution and card program, never to an individual account or person.

mastercard

BIN 257821, digit by digit

Each position in a BIN carries defined meaning under ISO/IEC 7812. Here is how the 6 digits of 257821 break down.

2Major Industry Identifier — Airlines and financial (incl. Mastercard 2-series)

5Issuer range digit 2 of the 6-digit prefix

7Issuer 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 257821 — frequently asked questions

Which bank issued BIN 257821?

The live registry lookup doesn't currently return a bank name for BIN 257821. The prefix resolves to the Mastercard network, and issuer details may appear as registries update — newly issued and virtual ranges often lag.

What card network does BIN 257821 run on?

BIN 257821 runs on the Mastercard network. Mastercard is a global network whose BINs fall in the 51–55 and 2221–2720 ranges, accepted at merchants worldwide.

Is it legal to look up BIN 257821?

Yes. BIN 257821 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

257811 257812 257813 257814

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