Founded in 2012, the Open Observatory of Network Interference (OONI) is a non-profit free software project that aims to empower decentralized efforts in documenting internet censorship around the world.

To this end, we work on:

Thanks to our global community, more than a billion network measurements have been published from more than 200 countries, shedding light on cases of internet censorship worldwide.

Join our community by running OONI Probe to contribute measurements! But please read our Data Policy and documentation about potential risks first.

Questions? Learn more through our Frequently Asked Questions (FAQ) section.


Our mission is to ensure a free and open internet by increasing transparency of internet censorship around the world.

We believe that everyone should have equal and open access to information. We aim to help create and defend an internet where human rights – particularly freedom of expression and access to information – are promoted and protected around the world.

We know that we can’t do this alone. This is why we have built a decentralized internet censorship observatory, powered by human rights defenders worldwide.

We create free and open source network measurement tools that anyone can use to measure internet censorship.

We openly publish measurements to provide a public archive on network interference and to increase transparency of internet censorship around the world.

All of our methodologies, tools, and measurements are entirely open, transparent, and peer-reviewed.

By increasing transparency of internet censorship, we aim to support public debate on information controls and promote social justice on the internet.


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

For real-time communication, you can reach us on Slack or IRC.

Our physical mailing address is the following:

Open Observatory of Network Interference (OONI)

Via Ostiense 131L

00154, Rome, Italy

Tax ID: IT-96568220584