The Open Observatory of Network Interference (OONI) is a project that monitors internet censorship globally.

[10] On 24 February 2019, Cuban independent news outlet Tremenda Nota confirmed the blocking of its website a few hours before a referendum in Cuba.

OONI network measurement data confirmed the blocking of the site along with several other independent media websites during the referendum.

[12][13] Cases of internet censorship and network disruptions during elections have also been detected in Benin,[14] Zambia,[15] and Togo.

[17][18] Following the 2022 Russian invasion of Ukraine, OONI confirmed that most Russian Internet Service Providers started blocking access to Twitter, Facebook, Instagram, BBC, Deutsche Welle, Radio Free Europe, Voice of America, Interfax, Meduza, Dozhd, The New Times and 200rf (a website launched by the Ministry of Internal Affairs of Ukraine to enable Russians to find their family members who were captured or killed during the war).