What Is a Credit Card Number? | Capital One
https://www.capitalone.com/learn-grow/money-management/what-is-a-credit-card-number/
WEBNov 30, 2023 · Get started. What are credit card numbers and how do they work? A credit card number is the 15- or 16-digit number found on the front or back of a credit card. It identifies several things, including: The credit card network: The four major credit card networks in the U.S. are Visa®, Mastercard®, American Express® and Discover®.
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