The Open Observatory of Network Interference (OONI) is a free software project under The Tor Project which aims to empower decentralized efforts in increasing transparency of internet censorship around the world.

We develop free and open source software, called ooniprobe, that you can run to examine the following:

By running ooniprobe, you can collect data that can serve as evidence of internet censorship since it shows how, when, where, and by whom it is implemented.

Thanks to tens of thousands of ooniprobe users around the world, millions of network measurements have been collected from more than 200 countries since 2012. All network measurement data is published on OONI Explorer, arguably the largest publicly available resource on internet censorship to date.

Prior to running ooniprobe, please read our Data Policy and documentation about potential risks.


You can contact the OONI team by sending an email to contact@openobservatory.org.

Encrypted emails can be sent using the following PGP key:

pub 4096R/6B2943F00CB177B7 2016-03-23
Key fingerprint = 4C15 DDA9 96C6 C0CF 48BD 3309 6B29 43F0 0CB1 77B7
uid [ultimate] OONI - Open Observatory of Network Interference
sub 4096R/8EBD2087374399AB 2016-03-23

Alternatively, you can reach us via XMPP with OTR:

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