IODA (Internet Outage Detection and Analysis) focuses on measuring network outages, distinguishing itself from blockage-centric approaches like OONI. It employs various methodologies including BGP announcements, Active Probing (monitoring normal vs abnormal signal behavior through continuous pings), and Telescope (capturing unsolicited network traffic via dedicated research infrastructure). This data is aggregated at country or regional levels, with reports detailing specific events and overall outage scores.

IODA’s analysis has led to the development of techniques to differentiate between shutdowns and spontaneous outages, as well as detect throttling and route changes. However, it primarily operates on IPv4, limiting visibility into mobile networks and regions heavily reliant on private IPs (NAT).

IODA analysis was presented at the inaugural SplinterCon in Montreal’23 and mentioned in the conference report.

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