It's revealed elsewhere in the report that the fastest US city is Boston with an average connection speed of 8.4Mbps, though that only makes it 51st in the world behind a top 50 list dominated by South Korea and Japan. Those countries are predictably on top of the international table, too, with average speeds of 17.5Mbps and 9.1Mbps respectively — meanwhile, the US languishes in 13th place as Americans saw their average speeds drop 5.3 percent from the previous quarter to 5.8Mbps.