Country and ISP diversity are approximated by resolving IP addresses to a country code and an autonomous system. We process the capabilities and properties relays and bridges reported to directory authorities.
This image shows the churn rate of the Tor network by relay flag in a given month. The churn rate, a value in the interval [0,1], captures the rate of relays joining and leaving the network from one consensus to the next (that is, within one hour). The complete image gallery can be found on Philipp Winter's homepage.
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