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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
2022-03-15 snowflake Started an interim Snowflake bridge running tor instances nicknamed flakey1–flakey8, temporarily running in parallel with the main bridge with its instances flakey1–flakey4.
comment
2022-02-28 Bridges BridgeDB moves to an rdsys backend.
announcement issue
2022-02-18 snowflake Outage of the Snowflake bridge.
mailing list post alert failed alert succeeded
2022-02-04 ipv4 ipv6 geoip and geoip6 databases updated to "IPFire Project Fri, 04 Feb 2022 05:51:31 GMT" (geoip-db-digest C4F1B5ECF1B07BBECBE06B93926E4D1E62882782, geoip6-db-digest 0E43B5C62033BFE47F32742D8C9F5B5F83180AA4).
commit
2022-02-01 Tor 0.3.5 reaches end of life.
mailing list post
2022-01-31 snowflake Switched the snowflake bridge from a load-balanced staging server back to the now load-balanced production server. Debugged connection problems until 2022-01-31 19:52:04.
issue comment comment
2022-01-30 snowflake Rebuilt the production bridge, which had run a single flakey instance, to run four instances flakey1–flakey4.
comment
2022-01-28 snowflake Switched the snowflake-server (at the time running on a load-balanced staging server) for a version with CPU profiling.
comment
2022-01-25 snowflake Switched the snowflake bridge to the temporary load-balanced staging server. Debugged connection problems until 2022-01-25 18:47:00.
issue comment post comment
2022-01-24 snowflake Started a temporary load-balanced Snowflake staging server running four instances flakey1–flakey4. Ran in parallel with the existing production instances (single flakey until 2022-01-30 04:51:00, flakey1–flakey4 thereafter) and the flakey1–flakey4 instances of the practice staging bridge until 2022-02-03 05:39:24.
comment
2022-01-17 to 2022-02-03 snowflake Ran a practice Snowflake staging bridge with four instances flakey1–flakey4, initially in parallel with the production bridge running a single flakey instance.
comment mailing list post
2022-01-12 to 2022-08-08 webstats Unknown Tor Browser update pings drop temporarily. A similar effect is present in other years.
graph issue issue
2022-01-11 to 2022-02-01 Burkina Faso obfs4 Unknown Temporary spike in obfs4 users from Burkina Faso.
bridge users graph
2022-01-07 snowflake Increased capacity of the mapping to client IP addresses on the snowflake bridge.
issue deployment comment
2021-12-29 snowflake Outage of the snowflake bridge.
comment alert failed alert succeeded
2021-12-22 snowflake Rebooted the Snowflake bridge to increase the number of CPUs from 4 to 8.
issue
2021-12-20 snowflake Release of Tor Browser 11.0.3, with an altered DTLS fingerprint in Snowflake to counteract blocking in Russia.
blog post issue NTC post
2021-12-15 ipv4 ipv6 geoip and geoip6 databases updated to "IPFire Project Wed, 15 Dec 2021 06:07:42 GMT" (geoip-db-digest BE1D08BC7B80B1D94CC1B67E5F59CECE9D282F99, geoip6-db-digest E7C6C7875CF972346E01F8E87E87E77D939437DB).
commit
2021-12-14 snowflake Release of Tor Browser 11.5a1, with an altered DTLS fingerprint in Snowflake to counteract blocking in Russia.
blog post issue NTC post
2021-12-08 obfs4 Release of Tor Browser 11.0.2, containing a new default obfs4 bridge "deusexmachina".
blog post issue
2021-11-22 to 2022-11-28 Burkina Faso Shutdown of mobile Internet in Burkina Faso.
article relay users graph tweet
2021-11-17 to 2022-02-02 obfs4 Run a Tor Bridge campaign, offers rewards for running obfs4 bridges.
blog post about start blog post about end
2021-11-08 Removal of roughly 600 "KAX17" non-exit relays.
mailing list post relay graph article
2021-11-08 onion Release of Tor Browser 11.0. Final deprecation of v2 onion services.
blog post deprecation timeline graph
2021-09-22 to 2021-10-07 Experiment to investigate the accuracy of relays' advertised bandwidth.
status.torproject.org mailing list post advertised bandwidth graph
2021-08-27 to 2021-09-08 Experiment to investigate the accuracy of relays' advertised bandwidth.
status.torproject.org mailing list post advertised bandwidth graph
2021-08-12 ipv4 ipv6 geoip and geoip6 databases updated to "IPFire Project Thu, 12 Aug 2021 05:51:15 GMT" (geoip-db-digest B3A9770171D3060502B7F13C0618BE109B92DF6C, geoip6-db-digest 410B70763FC675B3622264FAA0FC67B78FDE30C2).
commit
2021-06-10 to present Experiment to test latencies between relays.
status.torproject.org post announcing start
2018-09-26 to present fte Outage of default FTE bridge 128.105.214.162:8080.
comment
2018-09-26 to present fte Outage of default FTE bridge 128.105.214.163:8080.
comment
2018-01-05 to present Outage of the op-hk OnionPerf instance.
op-hk graph
2017-12-04 to present DDoS attack creates load on the network.
tor-relays thread relay graph summary post ticket
2017-02-10 to present OR exit Measurement error from bandwidth authority causes decrease in measured bandwidth in Europe.
mailing list post

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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.