Credit Card Type Detector

How this tool works in seconds: Paste any 13 to 19 digit card number with spaces or hyphens and the detector instantly strips separators, checks length, and matches the leading IIN digits to known network ranges including Visa starting 4, Mastercard 51 to 55 and 2221 to 2720, Amex 34 and 37, Discover 6011 and 65, JCB 3528 to 3589, Maestro and UnionPay. It returns the network name, six digit BIN, and digit count locally in your browser with no API call, so you get a clear Card: Visa | BIN: 411111 | Digits: 16 result immediately without sending sensitive numbers anywhere.

Why credit card processing accuracy matters for USA merchants on 09/22/2026: Routing a transaction to the wrong network or accepting an invalid BIN causes declines, $15 to $100 chargeback fees, and disrupted settlements. On 09/22/2026 a single misidentified $2,850 batch can trigger processor holds and customer refunds that cost far more than the sale. This detector applies precise IIN tables used by credit card processing platforms and fraud protection stacks, eliminating manual lookup errors and giving Austin, Chicago, Miami, Denver, Seattle, and New York teams reliable network data in seconds before they submit authorizations.

Fraud protection and checkout workflows: Support agents validating a customer claim check whether the presented card matches the BIN on file before issuing a $450 refund, developers writing unit tests for a checkout form feed 411111, 555555, 378282 and 601100 test cards to confirm Visa versus Mastercard branching logic, and retailers training new cashiers demonstrate how an Amex number differs from Discover at the POS. The tool also helps reconciling settlement reports where a $3,200 daily total must tie only to declared networks, preventing mismatched entries that delay funding and trigger fraud protection reviews from acquiring banks.

Tips for reliable results: Always validate length first because most networks use 16 digits but Amex uses 15 and some Visa can be 13 or 19, so entering all digits without truncation matters. Use copy-pasted numbers from your payment gateway sandbox to avoid typos, and remember detection identifies brand by prefix only and does not verify the card is active, has funds, or passes Luhn, so pair it with a Luhn check. For batch work run one BIN at a time and record the returned BIN column to map future $1,100 repeat orders to their correct network.

Privacy and offline handling: Card numbers never leave your device — detection runs entirely with local regex rules, stores nothing, and works offline after page load, which supports PCI-sensitive environments where transmitting full PANs to third-party lookup services would create compliance risk. No cookies, no logs, and no signup are set, so your test data remains private. Because everything executes in seconds inside the browser, you can validate numbers during development, training, or customer calls without internet dependency, queue limits, or exposing real customer data to external fraud protection platforms.