During the watched period, Mastercard's site was down for almost five hours (4 hours, 54 minutes), compared with the second-worst site (Discover's) with 45 minutes of downtime and the third-worst site (Visa Europe) at 14 minutes of downtime. The next two sites were Diner's Club (nine minutes of downtime) and Visa (five minutes of downtime) with AmericanExpress and Maestro both experiencing zero downtime during the watched period.
Although a Pingdom statement said the sites were watched from Nov. 9 to Dec. 20, the statement announcing the results of the survey was E-mailed to reporters the afternoon of Dec. 20, which means the results couldn't have included the full day's results.
Pingdom analyst Peter Alguacil played with Mastercard's slogan ("There are some things money can't buy. For everything else, there's MasterCard") when commenting on the survey's significance.
"It is definitely remarkable that a company like Mastercard, providing such an important service, and with presumably immense resources, seems to be having problems delivering a stable website," Alguacil said. "There are some things money can't buy and this seems to be it for Mastercard."