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Global Outage Maps: Tracking Internet Disruptions in Real-Time

I
Infrastructure Analyst
December 8, 2024
Global Outage Maps: Tracking Internet Disruptions in Real-Time

Explore how live outage maps work using global monitoring nodes. Understand active probing, traffic analysis, and how visual data helps track undersea cable cuts and DDoS attacks.

We tend to think of the internet as an invisible cloud, but it is actually a physical network of copper wires, fiber optic cables, and massive server farms. When a physical component breaks, it creates a ripple effect. Global outage maps provide a visual representation of the internet's 'weather' using two primary methods: active probing and passive monitoring. Active probing utilizes thousands of nodes (servers) located in different countries to send data packets to major websites. If nodes in London, New York, and Tokyo all fail to reach a server, the map marks that region as 'Red/Down'. Passive monitoring analyzes the massive flow of global traffic; if traffic from an entire country drops to zero, it usually indicates a massive infrastructure failure.

Common causes of global disruptions include undersea cable cuts—since 99% of international data travels via ocean cables, a single severed line can slow down connections for millions. Other causes include DDoS attacks, where malicious actors flood a network with junk traffic, and BGP route leaks, where traffic gets lost due to misconfiguration. Understanding global outages helps you realize that not every connection issue is your fault. Before troubleshooting your local Wi-Fi, check a Global Status Map to see if the internet itself is experiencing a disruption.

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