^OpenNet Initiative "Summarized global Internet filtering data spreadsheet", 29 October 2012 and "Country Profiles", the OpenNet Initiative is a collaborative partnership of the Citizen Lab at the Munk School of Global Affairs, University of Toronto; the Berkman Center for Internet & Society at Harvard University; and the SecDev Group, Ottawa نسخة محفوظة 11 أكتوبر 2017 على موقع واي باك مشين.
^Due to legal concerns the مبادرة إنترنت مفتوح does not check for filtering of استغلال الأطفال إباحيا and because their classifications focus on technical filtering, they do not include other types of censorship.