This visualizations shows the geographic location of 1,139,441,531 ip adresses. The locations are grouped by city, divided into four categories according to the total number of ip adresses belonging to a city. The categories are net-metropoles (more than 10,000,000 IPs), net-capitals (1,000,000 up tp 10,000,000 IPs), net-cities (100,000 up 1,000,000 IPs) and net-villages (fewer than 100,000 IPs). IP adresses that cannot be allocated to a city were left out.
I created this visualization using ActionScript, based on my classes for map projections and polygon maths, which you can download for own usage. The data was extracted from the free GeoLite-City database by MaxMind.