Uncover evidence of internet censorship worldwide

Open data collected by the global OONI community

2435.2M

Measurements

242

Countries

28k

Networks

OONI Explorer is an open data resource on internet censorship around the world.

Since 2012, millions of network measurements have been collected from more than 200 countries. OONI Explorer sheds light on internet censorship and other forms of network interference worldwide.

To contribute to this open dataset, install OONI Probe and run tests!

Blocking of Websites & Apps

Discover blocked websites around the world. Check whether WhatsApp, Facebook Messenger, Telegram and Signal are blocked.

Explore OONI measurements with a powerful search tool. View the most recently blocked websites. Compare internet censorship across networks.

Network Performance

Check the speed and performance of thousands of networks around the world. Explore data on video streaming performance.

Monthly coverage worldwide

Highlights

What can you learn from OONI Explorer?

Below we share some stories from research reports based on OONI data.

We share these case studies to demonstrate how OONI's openly available data can be used and what types of stories can be told.

We encourage you to explore OONI data, discover more censorship cases, and to use OONI data as part of your research and/or advocacy.

Censorship during political events

Internet censorship sometimes occurs in response to or in anticipation of political events, such as elections, protests, and riots. Below we share a few cases detected via OONI data and correlated with political events.

Cuba

2019 Constitutional Referendum

Blocking of independent media

Venezuela

2019 Presidential Crisis

Blocking of Wikipedia and social media

Zimbabwe

2019 Fuel Protests

Social media blocking and internet blackouts

Mali

2018 Presidential Election

Blocking of WhatsApp and Twitter

Spain

Catalonia 2017 Independence Referendum

Blocking of sites related to the referendum

Iran

2018 Anti-government Protests

Blocking of Telegram, Instagram and Tor

Ethiopia

2016 Wave of Protests

Blocking of news websites and social media

Pakistan

2017 Protests

Blocking of news websites and social media

Media censorship

Press freedom is threatened in countries that experience the blocking of media websites. Below we share a few cases detected through OONI data.

Egypt

Pervasive media censorship

Blocking of hundreds of media websites

Venezuela

Blocking of independent media websites

Venezuela's economic and political crisis

South Sudan

Blocking of foreign-based media

Media accused of hostile reporting against the government

Malaysia

Blocking of media

1MDB scandal

Iran

Pervasive media censorship

Blocking of at least 121 news outlets

Blocking of LGBTQI sites

Minority group sites are blocked around the world. Below we share a few cases on the blocking of LGBTQI sites.

Indonesia

Blocking of LGBTQI sites

Iran

Blocking of Grindr

Ethiopia

Blocking of QueerNet

Censorship changes

OONI measurements have been collected on a continuous basis since 2012, enabling the identification of censorship changes around the world. Some examples include:

Cuba

Cuba used to primarily serve blank block pages, only blocking the HTTP version of websites. Now they censor access to sites that support HTTPS by means of IP blocking.

Venezuela

Venezuelan ISPs used to primarily block sites by means of DNS tampering. Now state-owned CANTV also implements SNI-based filtering.

Ethiopia

Ethiopia used to block numerous news websites, LGBTQI, political opposition, and circumvention tool sites. As part of the 2018 political reforms, most of these sites have been unblocked.

We encourage you to explore OONI measurements to find more highlights!