Numbers

Test Credit Card BIN Generator

A Bank Identification Number (BIN) is the first 6 digits on any payment card, encoding the card network, issuing bank, and card type before a single transaction is processed. Developers building payment integrations, QA engineers stress-testing checkout flows, and fraud analysts validating detection rules all need sample BINs that match real-world prefix patterns without touching live card data. This test credit card BIN generator produces correctly formatted BINs for Visa, Mastercard, American Express, and Discover, letting you simulate routing decisions at scale. BIN lookup and routing logic sits at the core of nearly every payment system. When a card number is entered, the processor uses the BIN to determine which network rails to use, what card art to display, and whether surcharging or interchange rules apply. Testing this logic requires a steady supply of BINs across multiple networks, and using real BINs risks compliance issues under PCI DSS. This generator fills that gap. Choose a specific card network or let the tool randomize across all supported networks, then set how many BINs you need in a single batch. Results follow the correct prefix ranges for each network: Visa starts with 4, Mastercard with 51-55 or 22-27, Amex with 34 or 37, and Discover with 6011 or 65. That structural accuracy means your routing and card-type detection code sees inputs that behave like the real thing. Whether you are seeding a test database, building a BIN validation API, or checking that your UI correctly renders network logos, generating a clean batch of sample BINs takes seconds here. No sign-up, no real card data, no compliance headaches.

How to Use

  1. Select a card network from the dropdown, or leave it on Random to get a mixed batch across all supported networks.
  2. Set the count field to the number of BINs you need, from a single sample up to a larger batch for database seeding.
  3. Click Generate to produce the BIN list instantly, with each result following the correct prefix format for the chosen network.
  4. Copy individual BINs or the full list, then paste them into your payment integration tests, unit test fixtures, or BIN lookup validation scripts.

Use Cases

  • •Testing card-network logo rendering in checkout UI
  • •Seeding a test database with multi-network BIN samples
  • •Validating BIN lookup API responses against known prefixes
  • •Checking surcharge rules fire correctly per card network
  • •Simulating Amex-only or Discover-only acceptance scenarios
  • •Building unit tests for card-type detection functions
  • •Verifying interchange category assignment logic in billing software
  • •Stress-testing payment routing when switching processor gateways

Tips

  • →When testing card-type detection, generate 20+ BINs on Random and verify your code correctly classifies every single one without hardcoded prefix checks.
  • →Amex cards are 15 digits and use a 4-digit CVV — generate Amex BINs separately so you can test those field-length edge cases in isolation.
  • →Combine output from this generator with a full test card number tool to build complete 15- or 16-digit numbers that pass Luhn validation.
  • →If your gateway charges different fees by network, generate one batch per network and run them through your fee calculation logic to confirm each rule triggers correctly.
  • →The 8-digit BIN migration means some processors now read the first 8 digits before the 6. Test both BIN lengths if your integration targets a multi-processor environment.
  • →Save a small fixture file of known BINs per network inside your test suite rather than calling a generator dynamically, so tests remain deterministic and fast.

FAQ

What is a BIN number on a credit card?

The Bank Identification Number is the first 6 digits of a credit or debit card. It tells the payment processor which network to route through, which bank issued the card, and often the card tier (e.g., standard vs. platinum). The remaining digits are the account number and a check digit.

Are these generated BINs real or usable for purchases?

No. These BINs follow correct network prefix formats but are randomly generated and not linked to any real issuing bank or cardholder account. They will fail any live transaction attempt. They are designed exclusively for software testing, UI validation, and routing logic checks.

How many digits is a BIN?

Traditionally 6 digits. ISO 7812 is migrating the industry to an 8-digit BIN standard to accommodate the growing number of card issuers worldwide. Most modern payment processors now support 8-digit BINs, so check which standard your integration requires before testing.

What prefix does each card network use?

Visa starts with 4. Mastercard uses 51-55 and the newer 2221-2720 range. American Express uses 34 and 37. Discover uses 6011, 622126-622925, 644-649, and 65. This generator respects those ranges so your card-type detection code encounters structurally valid inputs.

Can I use these BINs to test a Luhn algorithm?

The BIN alone is only 6 digits, so it is not a complete card number and will not pass Luhn validation by itself. You need a full 15- or 16-digit card number for Luhn testing. Pair these BINs with a test card number generator that appends a valid account number and check digit.

Is using test BINs compliant with PCI DSS?

Yes, using non-real BINs in a test environment is consistent with PCI DSS guidance, which explicitly requires separating test data from production cardholder data. Never use real BINs or real card numbers in development or QA environments, as doing so can trigger compliance scope issues.

How do I test Amex-specific logic if I need multiple BINs?

Select 'American Express' from the Card Network dropdown and set your desired count, then click Generate. All results will start with 34 or 37, giving you a clean batch for testing Amex-specific paths such as 4-digit CVV handling, 15-digit card length enforcement, or network-specific fee rules.

What is the difference between a BIN and an IIN?

BIN (Bank Identification Number) and IIN (Issuer Identification Number) refer to the same thing: the first 6 (or 8) digits of a payment card. IIN is the technically correct term per ISO 7812, but BIN remains the dominant term in developer documentation, payment APIs, and fraud tooling.