Fastest ISPs in the US: Google Fiber, Verizon Fios, MetroNet, Cox, and Xfinity analyzed over 3.6 million speed tests from their speed test tool (from July 1, 2020, to July 1, 2021) to determine the fastest internet providers across the US, according to their average download speed.

The firm found that these are the fastest internet providers in the U.S. (according to average download speeds from their speed test):

1. Google Fiber (average download speed of 160.5 Mbps)

2. Verizon (138.0 Mbps)

3. MetroNet (135.2 Mbps)

4. Cox (134.5 Mbps)

5. Xfinity (131.6 Mbps)

Google Fiber (very limited availability) has the fastest average internet speeds in the U.S., followed closely by Verizon Fios. These two fiber internet providers have impressive download speeds, upload speeds, and ping rates.

MetroNet, Cox, and Xfinity (Comcast) also average respectable speeds. Like Google Fiber and Verizon, MetroNet is a fiber internet provider, so it can give equal upload and download speeds. Cox and Xfinity, on the other hand, give customers slower upload speeds than download speeds—17.6 Mbps and 13.9 Mbps, respectively.