BIN 645639 — Lookup & Card Details

Check bank, country, card type, and issuer information for BIN 645639.

What is BIN 645639?

BIN 645639 is on the Discover 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 Discover network.

Discover is a U.S.-based network whose BINs include 6011, 65 and the 644–649 ranges, with international acceptance via partner networks.

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 645639 itself is public metadata — it identifies the issuer, not the cardholder.

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BIN 645639, digit by digit

Each position in a BIN carries defined meaning under ISO/IEC 7812. Here is how the 6 digits of 645639 break down.

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

4Issuer range digit 2 of the 6-digit prefix

5Issuer 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

9Issuer range digit 6 of the 6-digit prefix

BIN 645639 — frequently asked questions

Which bank issued BIN 645639?

The live registry lookup doesn't currently return a bank name for BIN 645639. The prefix resolves to the Discover network, and issuer details may appear as registries update — newly issued and virtual ranges often lag.

What card network does BIN 645639 run on?

BIN 645639 runs on the Discover network. Discover is a U.S.-based network whose BINs include 6011, 65 and the 644–649 ranges, with international acceptance via partner networks.

Is it legal to look up BIN 645639?

Yes. BIN 645639 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

645629 645630 645631 645632

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