“An extremely detailed map of the North American Internet backbone including 134,855 routers. the colors represent who each router is registered to: red is Verizon, blue AT&T, yellow Qwest, green is major backbone players like Level 3 & Sprint Nextel, black is the entire cable industry put together, & gray is everyone else, from small telecommunications companies to large international players who only have a small presence in the U.S.”
LARGE PDF (1.1 meg)