IIN BIN check

Client

IIN (issuer identification number) and BIN (bank identification number) refer to the leading digits of a primary account number. Paste the full PAN for Luhn validation and a heuristic network readout—no live issuer registry.

IIN readout

Display shows detected network from prefix rules. Length hints follow brand conventions. Unknown prefix still gets Luhn result when enough digits are present.

Sensitive data: checks run only in your browser. Prefer processor-published test card numbers, never live PANs on shared devices.
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Spaces and dashes are stripped before counting digits and running Luhn. Card-network labels come from common public BIN/IIN ranges—they may mismatch exotic co-branded or new ranges.

16 digits after cleanup

Likely network: Visa

Luhn checksum: passes — algorithm-only; does not mean the card is active or genuine.

Common use cases

  • Map support tickets mentioning BIN to likely card brand.
  • Audit whether pasted prefix matches expected sandbox brand.

Common mistakes to avoid

  • Using six digits alone for Luhn validation

    Luhn runs on the complete PAN including check digit—not BIN substring only.

FAQ

Is IIN the same as BIN?

Colloquially yes for the leading issuer prefix digits on payment cards.

Common search terms

Phrases people search for that match this tool. See the full long-tail keyword index.

  • credit card luhn check online
  • visa mastercard bin checker browser
  • payment card checksum validator no upload
  • validate primary account number luhn locally
  • discover amex prefix checker heuristic online

More tools

Related utilities you can open in another tab—mostly client-side.