opte project: "

a free, still ongoing project that attempts to map the Internet on a weekly basis, analyzing wasted IP space, IP space distribution, & detecting the result of natural disasters, weather, war, & aesthetics/art. inspired by the visual results from internet mapping, a faster & open-source approach was developed that is capable of generating complete Internet map in 20 seconds on a simple notebook. [opte.org]

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(Via information aesthetics.)