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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.

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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
2018-01-24 to present webstats Tor Browser update pings roughly halve, again. The beginning corresponds with the release of Tor Browser 7.5; however unlike with Tor Browser 6.5.2, there was no change to app.update.url this time.
ticket thread
2018-01-23 obfs4 Tor Browser 7.5 is released. It adds the default obfs4 bridge noisetor01:46089.
blog post
2018-01-20 Relays Some more directory authorities upgrade to 0.3.2.9 which enforces new requirements for the exit flag. ~50 relays lose the exit flag
tor-relays post
2018-01-18 to 2018-02-24 snowflake Outage of Snowflake broker caused by the disabling of the Let's Encrypt TLS-SNI-01 challenge.
ticket graph
2018-01-16 Tor 0.3.2.9 reaches deb.torproject.org.
relay versions graph
2018-01-08 ipv4 ipv6 geoip and geoip6 databases updated to "January 5 2018 Maxmind GeoLite2 Country" (geoip-db-digest ACE2AF82816B9D3F58FC9C79A41B4506D6DAD713, geoip6-db-digest 387B3F555F1E054F0F9971C726F49848C5B5CF8B).
commit
2018-01-05 to present Outage of the op-hk OnionPerf instance.
op-hk graph
2017-12-21 Release of tor 0.3.2.8-rc, intended to fix the KIST bug that enabled a DoS on relays by running them out of memory.
announcement ticket
2017-12-20 ipv4 ipv6 geoip and geoip6 databases updated to "December 6 2017 Maxmind GeoLite2 Country" (geoip-db-digest 1D486694A710145631B295CC39ECC5682F75858C, geoip6-db-digest F33231CAC761A71F7C19273DB1E11CEE01E2D982).
commit
2017-12-16 to 2017-12-17 Bridges Unknown Drop in the number of measured bridges.
graph mailing list post
2017-12-12 to 2018-01-18 meek Outage of the meek.bamsoftware.com (unthrottled for public use), meek.bamsoftware.com:7443 (former meek-azure, now unused), and gaeuploader.meek.bamsoftware.com (used by GAEuploader) bridges.
2017-12-09 <OR> ipv6 Relays Release of Tor Browser 7.0.11, containing tor 0.3.1.9, which adds an IPv6 address for the bridge authority bastet.
blog post
2017-12-09 <OR> ipv6 Relays Release of Tor Browser 7.5a9, containing tor 0.3.2.6-alpha, which adds an IPv6 address for the bridge authority bastet.
blog post
2017-12-08 to 2017-12-11 Bridges The bridge authority was down for unknown reasons.
graph mailing list post
2017-12-04 to present DDoS attack creates load on the network.
tor-relays thread relay graph summary post ticket
2017-12-01 <OR> ipv6 Relays Release of tor 0.2.8.17, 0.2.9.14, 0.3.0.13, 0.3.1.9, and 0.3.2.6-alpha, which add an IPv6 address for the bridge authority bastet.
ticket blog post
2017-11-15 <OR> Relays Release of Tor Browser 7.5a8, containing tor 0.3.2.4-alpha, which adds a new directory authority bastet, and changes the IP address of the directory authority Longclaw.
blog post
2017-11-15 meek Outage of meek-amazon bridge.
ticket
2017-11-14 <OR> Relays Release of Tor Browser 7.0.10, containing tor 0.3.1.8, which adds a new directory authority bastet, and changes the IP address of the directory authority Longclaw.
blog post
2017-11-11 to 2017-11-12 Outage of the op-hk OnionPerf instance.
op-hk graph
2017-11-10 ipv4 ipv6 geoip and geoip6 databases updated to "November 6 2017 Maxmind GeoLite2 Country" (geoip-db-digest E3C910F3B2A6C916C7BE33A943091EF57048B72C, geoip6-db-digest E8BD5B2E6554C27F718F1222667C09680D75F799).
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.