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Dev utilities
Card / IBAN validator
Luhn check for credit cards (with issuer detection) and mod-97 check for IBAN.
Credit card
Luhn algorithm + issuer detection
IBAN
Mod-97 check + length per country
Card number
Valid card number
Luhn check passes.
Issuer:
Visa
· Masked:
453201••••••0366
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