card number validation

What Are Common Methods for Card Number Validation?

Here are some of the common methods used for card number validation:
Luhn Algorithm: A simple checksum formula used to validate a variety of identification numbers, primarily credit card numbers.
BIN Lookup: This involves checking the Bank Identification Number (the first 6 digits) to identify the issuing bank.
Regular Expressions: These are used to check the format of the card number based on known patterns for different card issuers.

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