Free BIN Checker & Bank Identification Number Lookup

Binlyx is a free BIN checker and IIN lookup tool for payment teams, developers, and fraud analysts. Use our bank identification number lookup to validate credit card numbers, identify issuing banks, detect Visa, Mastercard, and Amex card brands, and browse BIN data organized by country. A REST API is available for production integrations.

What is a BIN or IIN?

A Bank Identification Number (BIN), also called an Issuer Identification Number (IIN), is the first six to eight digits of a payment card. BIN lookup reveals the card brand, card type, issuing bank, and country of origin. Accurate BIN data helps reduce fraud, improve authorization rates, and route payments correctly.

Free BIN checker tools

• BIN Checker — validate card numbers with Luhn checksum and lookup issuer details instantly
• BIN List by Country — browse bank identification numbers indexed by country, bank, and brand
• BIN Lookup API — REST documentation for developers integrating BIN validation
• Pricing — compare Free and Pro API plans with transparent rate limits
• Blog — guides on BIN lookup, payment fraud prevention, and API tutorials
• Create free account — get your API key in seconds

Why choose Binlyx for BIN lookup?

Binlyx runs on Cloudflare Workers at the edge, caching BIN records close to your users for fast response times. Unlike static BIN databases that go stale, our public directory grows with every real lookup. We never store full card numbers — only BIN prefixes are processed and cached for performance.

Whether you need a one-off bank identification number lookup on the website or high-volume BIN API access for your payment platform, Binlyx combines a free BIN checker with scalable API plans.

Legal & privacy

Read our Privacy Policy and Terms of Service for details on data handling, API usage, and acceptable use. Learn more about payment card numbers on Wikipedia.