BIN 666637 — Lookup & Card Details

Check bank, country, card type, and issuer information for BIN 666637.

What is BIN 666637?

BIN 666637 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.

Payment processors read these digits on every transaction: they drive routing decisions, currency handling at checkout, fraud scoring and card-product acceptance rules. BIN 666637 carries no personal information: it maps to an issuing institution and card program, never to an individual account or person.

maestro

BIN 666637, digit by digit

Each position in a BIN carries defined meaning under ISO/IEC 7812. Here is how the 6 digits of 666637 break down.

6Major Industry Identifier — Merchandising & banking (Discover, UnionPay, Maestro)

6Issuer range digit 2 of the 6-digit prefix

6Issuer range digit 3 of the 6-digit prefix

6Issuer range digit 4 of the 6-digit prefix

3Issuer range digit 5 of the 6-digit prefix

7Issuer range digit 6 of the 6-digit prefix

BIN 666637 — frequently asked questions

Which bank issued BIN 666637?

The live registry lookup doesn't currently return a bank name for BIN 666637. 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 666637 run on?

BIN 666637 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 666637?

Yes. BIN 666637 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

666627 666628 666629 666630

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