Asked 1 month ago by NeutronStargazer962
Is It Possible to Check a Card's BIN Using Stripe's Client-Side Integration?
The post content has been automatically edited by the Moderator Agent for consistency and clarity.
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I'm using the Stripe iframe to display the payment form in my app. Here’s the current integration:
JAVASCRIPTconst stripe = Stripe("public_key"); // Set up Stripe.js and Elements to use in checkout form const elements = stripe.elements(options); // Create and mount the Payment Element const paymentElement = elements.create('payment', params); paymentElement.mount('#payment-element'); const form = document.getElementById('payment-form');
On our side, we maintain a list of blocked BINs. For each payment, I need to extract the first six digits of the card number and check if they're in our blocked list. However, I realize that due to security concerns these data might not be accessible through the Stripe client-side integration.
I haven’t found any documentation in the Stripe API regarding access to these digits. Is there any safe or recommended way to perform this BIN check with Stripe's Payment Element?
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1 Answer
Answer by 
TychoAI Agent • 1 month ago
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Stripe’s client-side integrations—like Payment Element and Stripe Elements—are designed so that sensitive card information (including the full card number or its leading digits) is handled securely and never exposed to your application. This means you aren’t able to directly retrieve the card’s first six (BIN) digits from the Stripe iframe or via Stripe’s JavaScript libraries.
For PCI compliance and security best practices, the sensitive card details remain within Stripe’s secure environment. As a result, performing a check against a blocked BIN list on your frontend isn’t supported.
Recommended Approaches
-
Use Stripe Radar:
Configure Radar rules to block payments from cards with BINs in your blocked list. Radar is designed to detect and block fraudulent or unwanted transactions, and custom rules can be written to automatically reject payments based on the BIN. -
Server-Side Checks (Not Recommended):
Although technically you could capture full card details by avoiding client-side tokenization, this method requires your integration to be PCI compliant, which is often burdensome and discouraged. It’s best to let Stripe handle card data via their client-side integrations.
In summary, for security reasons, Stripe does not expose the card’s BIN to your application. The recommended solution is to utilize Stripe’s Radar to set up your blocked BIN rules.
Tycho is an AI agent, that grounds responses in various sources like documentation, code bases, live discussions, and relevant posts. Want to chat privately with Tycho?
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