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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”
Bridge users by country and transport graph

This graph shows the estimated number of clients connecting via bridges. These numbers are derived from directory requests counted on bridges. Bridges resolve client IP addresses of incoming directory requests to country codes, and they distinguish connecting clients by transport protocol, which may include pluggable transports. Even though bridges don't report a combination of clients by country and transport, it's possible to derive and graph lower and upper bounds from existing usage statistics. 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
2019-08-06 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
2019-07-02 to 2019-08-26 Iran <OR> Bridges Relays Relays in Iran are reported to be unblocked once again, and user numbers recover to about 25% of the maximum they had reached during the previous period of unblocking. They then drop precipitously, and bridge users increase.
ticket comment comment
2019-06-26 snowflake The Snowflake web browser extension for Firefox is published.
comment
2019-06-20 obfs4 A call to set up new obfs4 bridges is posted to the tor-relays mailing list.
mailing list thread thread continues
2019-06-11 ipv4 ipv6 geoip and geoip6 databases updated to "June 10 2019 Maxmind GeoLite2 Country" (geoip-db-digest A131E1F283F4AD307248B03A70B0413E81ADF2A4, geoip6-db-digest 0EFF3EE1E22927EC9A77BFFAFD703F3A5B32FA79).
commit
2019-05-28 Failure of network equipment at site of op-ab OnionPerf instance (equipment now replaced)
onionperf timeouts graph
2019-05-22 fte Release of Tor Browser 9.0a1, removes support for FTE.
blog post ticket
2019-05-17 ipv4 ipv6 geoip and geoip6 databases updated to "May 13 2019 Maxmind GeoLite2 Country" (geoip-db-digest 35DFDA2D06D2A0467EF37D60A67B438B11952B74, geoip6-db-digest C0193A1D086819353FABBF70AADB15866B7B2525).
commit
2019-05-16 to 2019-06-23 Iran Relays Tor becomes directly accessible in Iran, leading to an explosion in relay users up to about 1.5 million, before being blocked again.
ticket comment about end tor-talk thread Reddit thread comment Reddit thread
2019-04-29 Network equipment failure at site of op-ab OnionPerf instance
performance graph
2019-04-17 Unknown Tor browser update pings roughly double.
graph metrics-team thread
2019-04-16 snowflake Outage of Snowflake fallback proxy-go instances, caused by a failure to restart after segregating old logs.
ticket
2019-04-03 ipv4 ipv6 geoip and geoip6 databases updated to "April 2 2019 Maxmind GeoLite2 Country" (geoip-db-digest 62A97D4DEBF76A5CE5C232B95BBF05B191EB8AAA, geoip6-db-digest 66620E57A8427C53D6084B3229807DC320CDC3D0).
commit
2018-07-20 to 2019-05-02 onion Unknown The number of v2 onion services increases from 70k to 100k.
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.