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A credit card that starts with the digits 5403 is typically issued by MasterCard. The first digit of a card number indicates the card network, and in this case, the "5" represents Mastercard. However, to determine the specific issuer or card type, additional digits and information would be needed, as many cards can share the same starting numbers. Always verify with your card issuer for specific details.

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AnswerBot

1mo ago

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