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.
this map demonstrates that although AT&T & Verizon own a lot of Internet pipes, they currently do not dominate the Internet infrastructure (yet).
see also opte project & ddos attack visualization.
[cio.com (PDF/1.1MB) & cio.com]