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Tor Metrics
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Users

We estimate the number of users by analyzing the requests induced by clients to relays and bridges.

  • Relay users
  • Bridge users by country
  • Bridge users by transport
  • Bridge users by country and transport
  • Bridge users by IP version
  • BridgeDB requests by requested transport
  • BridgeDB requests by distributor
  • Top-10 countries by relay users
  • Top-10 countries by possible censorship events
  • Top-10 countries by bridge users
  • “The anonymous Internet”
Relay users graph

This graph shows the estimated number of directly-connecting clients; that is, it excludes clients connecting via bridges. These estimates are derived from the number of directory requests counted on directory authorities and mirrors. Relays resolve client IP addresses to country codes, so that graphs are available for most countries. Furthermore, it is possible to display indications of censorship events as obtained from an anomaly-based censorship-detection system (for more details, see this technical report). For further details check the documentation on Reproducible Metrics.

Download graph as PNG or PDF.

Download data as CSV.

Learn more about the CSV data format or how to reproduce the graph data.

Related events

The following events have been manually collected in the metrics-timeline Git repository and might be related to the displayed graph.

Dates Places/Protocols Description and Links
2019-10-03 China obfs4 The new default bridge 193.11.166.194 is already blocked by the GFW – two days after the Tor Browser alpha release that shipped with it. The block may have happened sooner, though. We only tested the bridge just now.
ticket
2019-10-02 ipv4 ipv6 geoip and geoip6 databases updated to "October 1 2019 Maxmind GeoLite2 Country" (geoip-db-digest 34ABC09019FAB09BA3083B3663EC0B807FC16151, geoip6-db-digest F4D3BEC6294DF7FAEAEE5966CC6706CF91CE9BC4).
commit
2019-10-01 snowflake Release of Tor Browser 9.0a7, the first release that has Snowflake for Windows.
blog post ticket
2019-08-06 to 2019-08-09 Experiment to test the accuracy of relays' advertised bandwidth estimation.
description of experiment post announcing start post announcing end advertised bandwidth graph relay flags graph
2019-07-27 snowflake The Snowflake proxy hosted at snowflake.torproject.org is updated, changing domains from bamsoftware.com to freehaven.net in order to work around the Google Safe Browsing block.
comment
2019-07-27 snowflake Version 0.0.7 of the Snowflake extension for Chrome is released, changing domains from bamsoftware.com to freehaven.net in order to work around the Google Safe Browsing block.
comment
2019-07-26 flashproxy snowflake Cupcake 2.0 is released, now working with Snowflake rather than flash proxy.
Chrome Web Store page
2019-07-26 snowflake Version 0.0.8 of the Snowflake extension for Firefox is released, changing domains from bamsoftware.com to freehaven.net in order to work around the Google Safe Browsing block.
comment
2019-07-23 snowflake The broker domain name snowflake-broker.bamsoftware.com is blocked by Google Safe Browsing, preventing the Snowflake web browser extension from working.
ticket comment noting decrease in proxies
2019-07-03 snowflake The Snowflake web browser extension for Chrome is published.
comment

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This material is supported in part by the National Science Foundation under Grant No. CNS-0959138. Any opinions, finding, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation. "Tor" and the "Onion Logo" are registered trademarks of The Tor Project, Inc.. Data on this site is freely available under a CC0 no copyright declaration: To the extent possible under law, the Tor Project has waived all copyright and related or neighboring rights in the data. Graphs are licensed under a Creative Commons Attribution 3.0 United States License.