NetRadar is a program that maps your Internet connection. Here are some images that it has generated over the past few years.
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This is a continuation of the latency isolation algorithm on the previous page.
More progressions in the latency isolation algorithm. 
This graph is the final step in the isolation algorithm.
This is the first visualization made by NetRadar. The layout algorithms used by NetRadar  have improved greatly since then. 
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NetRadar: Your Internet Spyglass.