> Hell, during the height of this Comcast partnered with Speedtest, and now hav their own Speedtest servers all over the country, so you don't even leave Comcast's network.
Most ISP's do, and if you tell it to use the server of some other provider off-net they'll happily make the excuse that "we can only guarantee bandwidth to the edge of our network."
It's a crap excuse, because, duh, you have no control over the path traffic takes once it leaves your AS on hopefully the best route - but if you have poor connectivity to your peers that's still on you.