Diners Club International, founded as Diners Club, is a charge card company owned by Discover Financial Services. Wikipedia
Customer service: 1 (800) 234-6377
Founders: Alfred S. Bloomingdale and Matty Simmons
Parent organizations: Discover Financial Services, Citigroup, Bank Of Montreal, and more
Founded: February 8, 1950, New York, NY
Headquarters: Riverwoods, IL