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BIN 421100 — Lookup & Card Details
Check bank, country, card type, and issuer information for BIN 421100.
What is BIN 421100?
BIN 421100 is on the Visa 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 Visa network.
Visa is the world's largest card network, with cards beginning with the digit 4 and accepted in virtually every country.
In practice this prefix is what a checkout sees first — risk engines score it, gateways route on it, and merchants use it to decide whether to accept the card class at all. BIN 421100 is institutional data under the ISO/IEC 7812 standard — looking it up reveals the issuing program, nothing about any cardholder.
BIN 421100, digit by digit
Each position in a BIN carries defined meaning under ISO/IEC 7812. Here is how the 6 digits of 421100 break down.
BIN 421100 — frequently asked questions
Which bank issued BIN 421100?
The live registry lookup doesn't currently return a bank name for BIN 421100. The prefix resolves to the Visa network, and issuer details may appear as registries update — newly issued and virtual ranges often lag.
What card network does BIN 421100 run on?
BIN 421100 runs on the Visa network. Visa is the world's largest card network, with cards beginning with the digit 4 and accepted in virtually every country.
Is it legal to look up BIN 421100?
Yes. BIN 421100 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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