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OONI Coverage

Censorship monitoring only covers the networks where someone runs OONI Probe.

OONI's censorship measurements come from volunteers running OONI Probe on their own connections. Within one region, each provider and network (ASN, autonomous system number) may block different sites, so when only one or two providers are measured, blocking on the others goes unrecorded. This page sets OONI's measurement counts against APNIC's estimates of how many users each network has, to show how many users the measurements cover, which networks they concentrate on, and which networks have none.

The page is regenerated every hour and OONI's measurements are read every six hours. Taiwan is shown by default, with other regions as reference points; switch between them with the region list below. Each quarter's changes are written up in the quarterly reports.

Measurements up to 2026-10-09 UTC · user estimates from 2026-10-08

Networks measured 34 ±0vs previous 30 days
Users covered 93.9% -0.7 ppvs previous 30 days
Measurements 902,088 -156,934vs previous 30 days
Top two networks 65.6% +0.1 ppvs previous 30 days

Cards show the last 30 days, and the small charts show each day over the last 60. A lower share for the top two networks means the measurements are more spread out.

Networks with the most users

The ten networks with the most users by APNIC's estimates, against their share of measurements and the number of days measured over the last 30 days. Networks with many users and few measurements are where running OONI Probe helps most.

Networks with the most usersUsersMeasured
ASNNameUsersMeasuredDays
AS3462 AS3462HINET - Data Communication Business Group 33.3% 43.2% 30
AS17421 AS17421EMOME-NET - Mobile Business Group 16.6% <0.1% 5
AS24158 AS24158taiwanmobile-as - Taiwan Mobile Co., Ltd. 14.8% 3.1% 30
AS9674 AS9674FET-TW - Far EastTone Telecommunication Co., Ltd. 13.4% 0.9% 16
AS38841 AS38841kbro-AS-TW - kbro CO. Ltd. 5.1% 0.6% 7
AS9416 AS9416MULTIMEDIA-AS-AP - Hoshin Multimedia Center Inc. 4.0% 0.6% 23
AS131596 AS131596TBCOM-NET - TBC 2.3% <0.1% 1
AS24164 AS24164UBBNET-AS-TW - UNION BROADBAND NETWORK 1.2% 0.0% 0
AS18049 AS18049TINP-TW - Taiwan Infrastructure Network Technologie 0.8% 1.4% 30
AS24165 AS24165UBBNET-AS-TW - UNION BROADBAND NETWORK 0.8% 0.0% 0

Networks without measurements

14 networks with at least 0.1% of users had no measurements in the last 30 days, about 4.9% of users in total.

ASNNameUsers
AS24164 AS24164UBBNET-AS-TW - UNION BROADBAND NETWORK 1.23%
AS24165 AS24165UBBNET-AS-TW - UNION BROADBAND NETWORK 0.77%
AS7482 AS7482APOL-AS - Asia Pacific On-line Service Inc. 0.61%
AS131602 AS131602HYA - Hsin Yeong An Cable TV Co., Ltd. 0.34%
AS24163 AS24163UBBNET-AS-TW - UNION BROADBAND NETWORK 0.32%
AS17809 AS17809VEETIME-TW-AP - VEE TIME CORP. 0.26%
AS18182 AS18182SONET-TW - Sony Network Taiwan Limited 0.22%
AS18429 AS18429EXTRALAN-TW - Extra-Lan Technologies Co., LTD 0.22%

Where measurements come from

Each network's share of measurements over the last 30 days. When a few networks account for most of them, the rest can only be judged from scattered data.

Measurements by networkAS3462AS131584AS149791AS38845AS18419Others
  • AS3462HINET - Data Communication Business Group43.2%
  • AS131584TAIFO-AS-TW - Taiwan Intelligent Fiber Optic Network Co.,Ltd.22.4%
  • AS149791STARVERSE-AS-AP - StarVerse Network Ltd.7.8%
  • AS38845FJU-AS-TW - Fu Jen Catholic University7.7%
  • AS18419DADA-AS-TW - DaDa Broadband LTD.7.1%
  • Others11.8%

4 more networks are not in APNIC's user estimates and account for 8.3% of measurements; most are academic, hosting, or cloud networks.

Daily measurements

Measurements OONI Probe sends from this region each day, split by result. An anomaly only means the result differs from the control; confirmed blocking has been matched against known blocking patterns.

Measurements per dayOKAnomalyConfirmedFailure
025k50k08/1109/1010/092026/08/11 OK 25,5392026/08/11 Anomaly 5702026/08/11 Confirmed 02026/08/11 Failure 3,2822026/08/12 OK 24,7002026/08/12 Anomaly 5332026/08/12 Confirmed 02026/08/12 Failure 3,0252026/08/13 OK 42,0822026/08/13 Anomaly 7882026/08/13 Confirmed 02026/08/13 Failure 4,1722026/08/14 OK 34,6052026/08/14 Anomaly 6502026/08/14 Confirmed 02026/08/14 Failure 3,7432026/08/15 OK 37,9742026/08/15 Anomaly 6572026/08/15 Confirmed 02026/08/15 Failure 3,6042026/08/16 OK 35,7252026/08/16 Anomaly 6552026/08/16 Confirmed 12026/08/16 Failure 3,7822026/08/17 OK 36,2312026/08/17 Anomaly 6922026/08/17 Confirmed 02026/08/17 Failure 3,7462026/08/18 OK 33,7392026/08/18 Anomaly 1,3722026/08/18 Confirmed 02026/08/18 Failure 4,5652026/08/19 OK 32,1802026/08/19 Anomaly 1,2212026/08/19 Confirmed 02026/08/19 Failure 3,1812026/08/20 OK 32,9612026/08/20 Anomaly 2,3982026/08/20 Confirmed 02026/08/20 Failure 2,8792026/08/21 OK 34,7712026/08/21 Anomaly 1,0622026/08/21 Confirmed 02026/08/21 Failure 2,2882026/08/22 OK 34,6192026/08/22 Anomaly 8942026/08/22 Confirmed 02026/08/22 Failure 2,7312026/08/23 OK 35,7092026/08/23 Anomaly 1,2952026/08/23 Confirmed 02026/08/23 Failure 3,0252026/08/24 OK 36,7082026/08/24 Anomaly 1,3452026/08/24 Confirmed 02026/08/24 Failure 3,5072026/08/25 OK 35,5322026/08/25 Anomaly 1,1742026/08/25 Confirmed 02026/08/25 Failure 3,6082026/08/26 OK 33,5002026/08/26 Anomaly 8362026/08/26 Confirmed 02026/08/26 Failure 2,5512026/08/27 OK 30,3522026/08/27 Anomaly 1,2532026/08/27 Confirmed 02026/08/27 Failure 3,0662026/08/28 OK 28,8292026/08/28 Anomaly 9622026/08/28 Confirmed 02026/08/28 Failure 2,6952026/08/29 OK 27,5562026/08/29 Anomaly 9342026/08/29 Confirmed 02026/08/29 Failure 4,8412026/08/30 OK 23,8052026/08/30 Anomaly 6282026/08/30 Confirmed 12026/08/30 Failure 3,6272026/08/31 OK 22,2462026/08/31 Anomaly 4712026/08/31 Confirmed 12026/08/31 Failure 2,4692026/09/01 OK 25,4672026/09/01 Anomaly 7782026/09/01 Confirmed 02026/09/01 Failure 3,0702026/09/02 OK 27,7392026/09/02 Anomaly 9012026/09/02 Confirmed 02026/09/02 Failure 4,1962026/09/03 OK 26,3572026/09/03 Anomaly 5552026/09/03 Confirmed 02026/09/03 Failure 2,8292026/09/04 OK 29,9652026/09/04 Anomaly 6122026/09/04 Confirmed 02026/09/04 Failure 4,3322026/09/05 OK 29,3832026/09/05 Anomaly 6112026/09/05 Confirmed 02026/09/05 Failure 4,6132026/09/06 OK 27,8902026/09/06 Anomaly 7072026/09/06 Confirmed 02026/09/06 Failure 3,5682026/09/07 OK 29,1422026/09/07 Anomaly 4902026/09/07 Confirmed 02026/09/07 Failure 2,5932026/09/08 OK 27,6202026/09/08 Anomaly 5922026/09/08 Confirmed 02026/09/08 Failure 3,2192026/09/09 OK 28,7432026/09/09 Anomaly 5022026/09/09 Confirmed 02026/09/09 Failure 2,4052026/09/10 OK 29,2672026/09/10 Anomaly 5442026/09/10 Confirmed 02026/09/10 Failure 4,1702026/09/11 OK 28,2582026/09/11 Anomaly 5822026/09/11 Confirmed 02026/09/11 Failure 4,6952026/09/12 OK 30,9022026/09/12 Anomaly 7152026/09/12 Confirmed 02026/09/12 Failure 4,1422026/09/13 OK 30,2482026/09/13 Anomaly 5842026/09/13 Confirmed 02026/09/13 Failure 3,6302026/09/14 OK 28,1882026/09/14 Anomaly 6822026/09/14 Confirmed 02026/09/14 Failure 3,6222026/09/15 OK 25,4432026/09/15 Anomaly 4862026/09/15 Confirmed 02026/09/15 Failure 2,1372026/09/16 OK 22,2352026/09/16 Anomaly 4902026/09/16 Confirmed 02026/09/16 Failure 2,5152026/09/17 OK 24,3402026/09/17 Anomaly 6112026/09/17 Confirmed 02026/09/17 Failure 3,4762026/09/18 OK 24,1662026/09/18 Anomaly 5682026/09/18 Confirmed 12026/09/18 Failure 2,6512026/09/19 OK 26,0422026/09/19 Anomaly 7792026/09/19 Confirmed 12026/09/19 Failure 3,5902026/09/20 OK 26,1152026/09/20 Anomaly 1,0212026/09/20 Confirmed 12026/09/20 Failure 2,8142026/09/21 OK 23,3852026/09/21 Anomaly 7032026/09/21 Confirmed 02026/09/21 Failure 3,2252026/09/22 OK 25,5752026/09/22 Anomaly 7242026/09/22 Confirmed 02026/09/22 Failure 4,9692026/09/23 OK 23,4542026/09/23 Anomaly 6602026/09/23 Confirmed 22026/09/23 Failure 2,8792026/09/24 OK 23,9422026/09/24 Anomaly 8172026/09/24 Confirmed 02026/09/24 Failure 4,1132026/09/25 OK 28,1762026/09/25 Anomaly 1,3122026/09/25 Confirmed 12026/09/25 Failure 4,5472026/09/26 OK 26,4832026/09/26 Anomaly 1,0702026/09/26 Confirmed 22026/09/26 Failure 3,4892026/09/27 OK 26,1392026/09/27 Anomaly 7872026/09/27 Confirmed 02026/09/27 Failure 3,3312026/09/28 OK 26,4552026/09/28 Anomaly 6192026/09/28 Confirmed 02026/09/28 Failure 4,0852026/09/29 OK 24,6672026/09/29 Anomaly 5652026/09/29 Confirmed 12026/09/29 Failure 4,4902026/09/30 OK 25,6382026/09/30 Anomaly 6162026/09/30 Confirmed 02026/09/30 Failure 3,9012026/10/01 OK 26,1852026/10/01 Anomaly 9292026/10/01 Confirmed 02026/10/01 Failure 4,2222026/10/02 OK 26,1012026/10/02 Anomaly 7742026/10/02 Confirmed 02026/10/02 Failure 4,2242026/10/03 OK 25,0312026/10/03 Anomaly 7232026/10/03 Confirmed 02026/10/03 Failure 3,1282026/10/04 OK 25,1562026/10/04 Anomaly 5622026/10/04 Confirmed 02026/10/04 Failure 2,3282026/10/05 OK 25,5762026/10/05 Anomaly 6472026/10/05 Confirmed 02026/10/05 Failure 3,6132026/10/06 OK 23,7192026/10/06 Anomaly 5952026/10/06 Confirmed 02026/10/06 Failure 2,3052026/10/07 OK 26,3352026/10/07 Anomaly 5942026/10/07 Confirmed 02026/10/07 Failure 2,6942026/10/08 OK 24,5032026/10/08 Anomaly 5962026/10/08 Confirmed 02026/10/08 Failure 2,6962026/10/09 OK 25,1642026/10/09 Anomaly 8892026/10/09 Confirmed 12026/10/09 Failure 2,265
Networks measured per day
0102008/1109/1010/092026/08/11 Networks measured 132026/08/12 Networks measured 132026/08/13 Networks measured 202026/08/14 Networks measured 172026/08/15 Networks measured 172026/08/16 Networks measured 172026/08/17 Networks measured 172026/08/18 Networks measured 162026/08/19 Networks measured 172026/08/20 Networks measured 162026/08/21 Networks measured 162026/08/22 Networks measured 162026/08/23 Networks measured 142026/08/24 Networks measured 162026/08/25 Networks measured 182026/08/26 Networks measured 152026/08/27 Networks measured 152026/08/28 Networks measured 142026/08/29 Networks measured 152026/08/30 Networks measured 122026/08/31 Networks measured 122026/09/01 Networks measured 142026/09/02 Networks measured 182026/09/03 Networks measured 182026/09/04 Networks measured 172026/09/05 Networks measured 162026/09/06 Networks measured 132026/09/07 Networks measured 162026/09/08 Networks measured 152026/09/09 Networks measured 172026/09/10 Networks measured 162026/09/11 Networks measured 162026/09/12 Networks measured 152026/09/13 Networks measured 152026/09/14 Networks measured 162026/09/15 Networks measured 152026/09/16 Networks measured 152026/09/17 Networks measured 172026/09/18 Networks measured 152026/09/19 Networks measured 142026/09/20 Networks measured 152026/09/21 Networks measured 142026/09/22 Networks measured 142026/09/23 Networks measured 142026/09/24 Networks measured 172026/09/25 Networks measured 162026/09/26 Networks measured 162026/09/27 Networks measured 142026/09/28 Networks measured 172026/09/29 Networks measured 142026/09/30 Networks measured 162026/10/01 Networks measured 162026/10/02 Networks measured 152026/10/03 Networks measured 142026/10/04 Networks measured 132026/10/05 Networks measured 142026/10/06 Networks measured 172026/10/07 Networks measured 162026/10/08 Networks measured 132026/10/09 Networks measured 13

Users covered

The share of this region's internet users, by APNIC's estimates, on networks that had at least one measurement that day. One measurement is enough to count, so this is an upper bound rather than a sign that every network is measured enough.

Users covered (%)
05010008/1109/1010/092026/08/11 Users covered 70.52026/08/12 Users covered 83.92026/08/13 Users covered 90.52026/08/14 Users covered 89.62026/08/15 Users covered 78.32026/08/16 Users covered 62.12026/08/17 Users covered 78.02026/08/18 Users covered 78.12026/08/19 Users covered 61.62026/08/20 Users covered 77.72026/08/21 Users covered 78.22026/08/22 Users covered 78.22026/08/23 Users covered 59.32026/08/24 Users covered 61.62026/08/25 Users covered 76.32026/08/26 Users covered 54.32026/08/27 Users covered 73.12026/08/28 Users covered 59.82026/08/29 Users covered 71.32026/08/30 Users covered 54.52026/08/31 Users covered 67.92026/09/01 Users covered 54.72026/09/02 Users covered 68.42026/09/03 Users covered 89.92026/09/04 Users covered 73.32026/09/05 Users covered 60.02026/09/06 Users covered 55.62026/09/07 Users covered 72.82026/09/08 Users covered 69.22026/09/09 Users covered 73.32026/09/10 Users covered 73.12026/09/11 Users covered 76.32026/09/12 Users covered 73.02026/09/13 Users covered 72.62026/09/14 Users covered 73.12026/09/15 Users covered 73.12026/09/16 Users covered 56.02026/09/17 Users covered 68.42026/09/18 Users covered 55.02026/09/19 Users covered 54.62026/09/20 Users covered 71.12026/09/21 Users covered 68.72026/09/22 Users covered 54.62026/09/23 Users covered 50.82026/09/24 Users covered 68.52026/09/25 Users covered 84.52026/09/26 Users covered 64.12026/09/27 Users covered 54.62026/09/28 Users covered 55.32026/09/29 Users covered 54.62026/09/30 Users covered 68.12026/10/01 Users covered 67.62026/10/02 Users covered 64.02026/10/03 Users covered 67.72026/10/04 Users covered 54.42026/10/05 Users covered 63.52026/10/06 Users covered 71.92026/10/07 Users covered 68.02026/10/08 Users covered 63.52026/10/09 Users covered 54.1

Across regions

Users covered by networks measured in the last 30 days, with each day's value over the last 60. Open a region for its full charts.

Taiwan 93.9% Hong Kong 69.4% Macau 85.1% Japan 84.2% South Korea 93.7% Singapore 78.5%

How the numbers are calculated

  • Measurement counts come from OONI's aggregation API, across all tests, grouped by the day each measurement started (UTC)
  • Users per network are APNIC's estimates, derived from ad-based sampling and updated weekly
  • Network names come from the APNIC and RIPE NCC ASN name lists
  • A single measurement is enough for a network to count as measured; whether it is measured enough shows in its share of measurements and the number of days
  • Days without measurements are left as gaps in the charts rather than filled in

Help fill the gaps

  • Install OONI Probe and run tests on your own connection, on a phone or a computer. Mobile data and home broadband are usually different ASNs, so testing on both helps
  • The community's OONI Run link 10328 sets everything up in one tap; see the OONI Run v2 guide for the risks to consider before installing and what the list contains
  • ASN observation data analysis: why network diversity matters and how to read a single measurement
  • ASN Coverage: a command-line tool that downloads raw measurements and breaks them down by network type and blocking method