http://magma.ua4vjlx72wv5crhkificaeysp62hizhazipfshsdvs6jxqvhtkpllcad.onion/guide/run-measurements.html
By using the OONI Probe
client, users can collect data to use as evidence of Internet censorship because
the data returned will show how, when, where, and who implemented any network
interference. OONI probe runs on various OS types (Android, iOS, macOS, and Linux) and user
interfaces (command-line, Web, and native graphical).