open-intel svg in numbers:
252 million domains measured on a daily basis
4.3 billion data points collected daily
9.3 trillion data points collected since the start in 2015

OpenINTEL is a joint project

Through this website, we provide information on our project, how our measurement works and how you can reach us if you have questions about using the data for your research.

Latest news

  • Tue, Jan 5, 2021
    OpenINTEL passes 5 trillion results milestone
    OpenINTEL has just passed the major milestone of 5 trillion results. We reached this milestone in December 2020, at the end of our fifth full year of operation. Over 2020, we have added ccTLDs and realised a major additional data source with the daily measurement of the full IPv4 reverse DNS namespace. As our sixth year of operation starts, we remain dedicated to our mission of being the long-term memory of the DNS.
  • Wed, May 20, 2020
    ccTLDs for Switzerland and Liechtenstein added to the measurement
    With thanks to SWITCH we have added the .ch and .li ccTLDs for Switzerland and Liechtenstein respectively.
  • Wed, Feb 26, 2020
    Major new feature: IPv4 reverse measurements
    As of the middle of February 2020, the OpenINTEL measurement has been extended to also cover the entire IPv4 reverse DNS name space. Like our other measurements, this measurement runs once every 24 hours. Using this data we hope to gain new insight into how the address space is managed, and to check, for example, consistency between forward and reverse DNS. This measurement adds an additional 1.1 billion data points per day, a data collection growth of over 45%.
News overview

Contact in case of problems

In case you are a DNS operator and you think our measurement is impacting your infrastructure, please go to our Problems page, where you can read more about what traffic you can expect to see from us, how you can contact us and if necessary, how you can block our traffic.

Contact us