Credit Card Type Detector - Free, Instant, In Your Browser
Paste a card number below to detect its network by the standard IIN/BIN prefix ranges (a format check only - not a real payment verification).
How to use Credit Card Type Detector
- 1Paste your text or data into the input box above.
- 2Credit Card Type Detector runs instantly, right in your browser.
- 3Copy the result or use it directly.
Your file is processed in your browser and is never uploaded.
Frequently Asked Questions
What's the formula?
Each card network is assigned distinct IIN/BIN prefix ranges by ISO/IEC 7812 - e.g. Visa always starts with 4, and Amex always starts with 34 or 37.
Is my data sent to a server?
No - everything runs entirely in your browser with JavaScript. Nothing is uploaded.