BIN Input
This checker runs locally and uses offline BIN pattern rules. It does not call external BIN APIs.
What this BIN checker does
This free BIN checker analyzes the first 6 to 8 digits of a payment card number and returns likely network matches, major industry identifier (MII), possible card types, and possible primary account number (PAN) lengths. It is useful for payment form validation, risk scoring pipelines, QA testing, and fintech prototyping.
How BIN lookup works
- Normalize input to digits and read the BIN/IIN prefix (6 or 8 digits).
- Map the first digit to MII category (finance, travel, telecom, etc.).
- Match deterministic network prefix ranges (Visa, Mastercard, Amex, Discover, and more).
- Return likely card traits such as possible card type and PAN length range.
- Generate a machine-readable JSON payload for downstream workflows.
Use cases
Teams use BIN lookup tools to validate payment onboarding flows, classify card network rules, and test card handling logic. This page is optimized around credit card BIN checker, BIN lookup, IIN checker, and payment card network detection queries.
- Fintech API development and QA
- Checkout form validation flows
- Fraud/risk pre-check enrichment
- Payment analytics tagging
FAQ
Is BIN the same as IIN?
In practice they are used interchangeably. IIN is the modern term, while BIN remains common in payment operations.
Can this tool validate the full card number?
This tool is focused on BIN/IIN analysis, not full PAN validation or authorization checks.
Does this page transmit any card information?
No. All card information stays on your device and nothing gets transmitted.
Should I input real customer card data?
Prefer test data wherever possible. If you must analyze production prefixes, avoid storing or sharing full PAN values and follow PCI requirements.