Live on the globe now: 2 tracked
This layer plots Internet connectivity disruptions on the live globe using IODA — Internet Outage Detection and Analysis, a research project from the Internet Intelligence Lab at Georgia Tech, built on work originally done at CAIDA. What makes IODA distinct is that it does not rely on one vantage point. It fuses three independent signals: BGP routing data from roughly 500 RouteViews and RIPE RIS monitors (which /24 blocks are still announced), active ICMP probing of the routable IPv4 space from CAIDA Ark nodes, and Internet background radiation seen by the UCSD Network Telescope. When several of these agree that traffic from a place has dropped, IODA scores it as an outage, which makes it a strong cross-check on commercial sources like Cloudflare Radar. Coverage is reported at three levels — country, administrative region or province, and Autonomous System (network) — and the focus is macroscopic events: government-ordered shutdowns, submarine cable cuts, natural disasters, conflict and large operator failures. Most signals update in near real time (BGP about every 5 minutes, active probing roughly every 10). It is one of about 29 live layers you can solo, spin and click into here. For deeper history and event context, see ioda.inetintel.cc.gatech.edu.
Data source: IODA / CAIDA
Cloudflare Radar infers outages from drops in traffic to Cloudflare's own network. IODA instead combines three external measurement signals — BGP routing, active probing and a network telescope — none of which depend on a single provider's traffic. It is academic and research-grade, and is often used to independently corroborate or refine what commercial sources report.
Three. BGP data from ~500 RouteViews and RIPE RIS monitors shows which /24 address blocks are still routed; active ICMP probing from CAIDA Ark nodes tests whether IPv4 blocks respond; and the UCSD Network Telescope watches unsolicited background traffic from a large unused address range. Agreement across signals raises confidence in an event.
IODA reports connectivity at country, region/province and Autonomous System (network) level, focusing on large-scale outages rather than single-site blips. The core signals are near real time: BGP updates about every 5 minutes and active probing about every 10, so most events surface within minutes.
It is operated by the Internet Intelligence Lab at Georgia Tech, continuing a project started at CAIDA. It is widely used to document Internet shutdowns, censorship, cable cuts, disasters and conflict-related disruptions — for example mobile shutdowns during elections and outages following cyclones or riots.