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So you can easily average speed test results, compare maximum speeds and research logged results for Comcast Cable. Operating in 40 states, Comcast is the United States largest cable operator. Using DOCSIS 3.0 Comcast customers see download speeds up to 505 Mbps and upload speeds up to 100 Mbps. Comcast High Speed Internet is now called XFINITY Internet. Run a speed test and compare your connection with Test My Net. Don't be fooled. Other speed tests, especially tests offered by your Internet provider try to eliminate routing factors. This can make your connection appear faster than it really is.
What is clear is that Comcast needs to increase speeds dramatically to compete with companies like Google and AT&T, which already have or soon will have fiber-optic gigabit Internet service (up to 1,000 Mbps) in markets around the country.