What credit card start with 1?

Credit cards that start with the number 1 are typically issued by the Discover network. Discover cards begin with the digits 6011, 622126-622925, 644, or 645, and 65. However, it's important to note that most credit cards start with the numbers 3, 4, 5, and 6, representing different networks like American Express, Visa, MasterCard, and Discover, respectively. Cards specifically starting with "1" are not common in the major credit card networks.