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Credit Card Validator

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Built: 4/8/2026, 12:01:11 PM

Credit Card Validator

Validate credit card numbers using the Luhn algorithm and identify card types.

Card Number

Test Card Numbers

Click to insert a valid test card number for development purposes.

How it works

• Luhn Algorithm: Validates card number checksum
• IIN/BIN Detection: Identifies card issuer from first digits
• Length Validation: Checks if length matches card type requirements
• Test cards are for development only and will not work for real transactions