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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
2016-09-28 meek Rate limit on the meek-amazon bridge returns to 3.0 MB/s, having been set to about 1.0 MB/s for some time, cause uncertain.
2016-09-24 obfs3 Default obfs3 bridge LeifEricson upgrades and begins reporting statistics to the new bridge authority Bifroest. This is the last obfs3 bridge that hadn't upgraded.
2016-09-24 obfs4 Default obfs4 bridge LeifEricson upgrades and begins reporting statistics to the new bridge authority Bifroest. This is the last obfs4 bridge that hadn't upgraded.
2016-09-23 to 2016-11-28 obfs3 Outage of default obfs3 bridges "Unnamed" and "Unnamed" (fingerprint AF9F66B7B04F8FF6F32D455F05135250A16543C9). (Start date not known for sure, though it must have been after 2016-09-23; discussed in non-archived tor-team email.)
2016-09-23 obfs3 Default obfs3 bridges ndnop0 and ndnop2 upgrade and begin reporting statistics to the new bridge authority Bifroest.
post on bridges not reporting statistics
2016-09-23 obfs3 Default obfs3 bridges "Unnamed" and "Unnamed" (fingerprint AF9F66B7B04F8FF6F32D455F05135250A16543C9) upgrade and begin reporting statistics to the new bridge authority Bifroest.
2016-09-23 obfs4 Default obfs3 bridges ndnop3 and ndnop5 upgrade and begin reporting statistics to the new bridge authority Bifroest.
post on bridges not reporting statistics
2016-09-20 meek macOS 10.12 (Sierra) is released, breaking some programs that are built with Go <1.7, including the meek-client that comes with Tor Browser. (See 2016-11-15 unbreaking event.)
ticket
2016-09-07 ipv4 ipv6 geoip and geoip6 databases updated to "September 6 2016 Maxmind GeoLite2 Country" (geoip-db-digest 72F8AD2CD7C97D173AD53276366EAD32B13E0A50, geoip6-db-digest B6427DEAD2291FBF8311A2233AF4960BF4009713).
commit
2016-09-02 Bridges The former bridge authority Tonga shuts down. Bridges that have not updated to tor 0.2.8.7 or 0.2.9.2-alpha (which include all 5 default obfs3 bridges and 3/16 default obfs4 bridges) stop reporting statistics.
shutdown notice blog post loss of reporting bridges
2016-08-31 Bridges CollecTor begins publishing bridge stats from the new bridge authority Bifroest.
post
2016-08-24 Bridges tor 0.2.8.7 and 0.2.9.2-alpha are released, changing the bridge authority from Tonga to Bifroest.
0.2.8.7 announcement
2016-08-18 to 2016-08-29 Mali Unknown Sudden increase of direct and bridge users in Mali.
relay graph bridge graph
2016-08-18 meek Changed the meek-amazon CDN price class from "All" to "Use Only US, Canada and Europe."
2016-08-12 ipv4 ipv6 geoip and geoip6 databases updated to "August 2 2016 Maxmind GeoLite2 Country" (geoip-db-digest 9DD185BEC4F482DDD20A0221B3DD3F40175F0123, geoip6-db-digest B1C1B6BDC9627E3D87530A2C70578AC69C20C5C6).
commit
2016-07-18 ipv4 ipv6 geoip and geoip6 databases updated to "July 6 2016 Maxmind GeoLite2 Country" (geoip-db-digest 19FC902B6A860BA7E4BADCB5404482995F7E0763, geoip6-db-digest 7E717154718F2065240B90F8132F305AF78C9A9D).
commit
2016-06-12 ipv4 ipv6 geoip and geoip6 databases updated to "June 7 2016 Maxmind GeoLite2 Country" (geoip-db-digest DA31976A9C7D48C2C16EA70BCE9006772A0F4A34, geoip6-db-digest FF1DD08CA9EB6528E1A6389E7154BD9586F24370).
commit
2016-05-30 fte Tor Browser 6.0 released, which lacks the fte pluggable transport on Mac.
6.0 blog post ticket
2016-05-13 meek meek-google's App Engine instance is suspended and meek-google stops working.
mailing list post
2016-05-09 ipv4 ipv6 geoip and geoip6 databases updated to "May 4 2016 Maxmind GeoLite2 Country" (geoip-db-digest 76631C314A048A59A1D801515CC7FD55CE719499, geoip6-db-digest C9392F0337A7509F1187890925CF7006F884ECBA).
commit
2016-04-28 fte Tor Browser 6.0a5 and 6.0a5-hardened released, which lacks the fte pluggable transport on Mac.
6.0a5 blog post 6.0a5-hardened blog post ticket
2016-04-07 ipv4 ipv6 geoip and geoip6 databases updated to "April 5 2016 Maxmind GeoLite2 Country" (geoip-db-digest F9DFB82B6F1A480F07F4B87992CBFB7A48CB8DA2, geoip6-db-digest 769B499E6AE9FE0C2366141B931A3DB1B5489114).
commit
2016-03-27 to 2016-03-31 meek Temporarily ran an experimental branch for IPv6 counting on the meek-azure bridge.
task-18460-2 branch
2016-03-27 meek Outage of meek-azure bridge, caused by an expired TLS certificate.
2016-03-04 ipv4 ipv6 geoip and geoip6 databases updated to "March 3 2016 Maxmind GeoLite2 Country" (geoip-db-digest A34F49E5A871FA4D243C46C04B67BB3CAAFE6F74, geoip6-db-digest 9C8C4F7C7612849C88206726FCDA8CB85B8D27F3).
commit

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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.