How to Validate a Credit Card With Your Mind The first 6 digits are the Issuer Identification Number. It will lndentify the institution that issued the card. Visa: 4xxxxx Mastercard 51xxxx - 55xxxx Discover: 601 lxx, 644xxx, 65xxxx Amex: 34xxxx, 37xxxx Cards can be looked up by their / auto :: credit card :: infographics

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Howto Validate4 a Credit Card With Your Mind
The first 6 digits are the Issuer Identification Number. It will lndentify the institution that issued the card.
Visa: 4xxxxx
Mastercard 51xxxx - 55xxxx Discover: 601 lxx, 644xxx, 65xxxx Amex: 34xxxx, 37xxxx
Cards can be looked up by their IIN. A

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