Uncover evidence of internet censorship worldwide

Open data collected by the global OONI community

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!

Websites and Apps
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.
Search and Filter
Network Properties
Network Performance
Check the speed and performance of thousands of networks around the world. Explore data on video streaming performance.

Monthly coverage worldwide


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.


2019 Constitutional Referendum

Blocking of independent media


2019 Presidential Crisis

Blocking of Wikipedia and social media


2019 Fuel Protests

Social media blocking and internet blackouts


2018 Presidential Election

Blocking of WhatsApp and Twitter


Catalonia 2017 Independence Referendum

Blocking of sites related to the referendum


2018 Anti-government Protests

Blocking of Telegram, Instagram and Tor


2016 Wave of Protests

Blocking of news websites and social media


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.


Pervasive media censorship

Blocking of hundreds of media websites


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


Blocking of media

1MDB scandal


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.


Blocking of LGBTQI sites


Blocking of Grindr


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 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.


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


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!