Cape Verde experienced a significant internet connectivity degradation on August 22, lasting approximately five and a half hours. The disruption began around 19:00 UTC and persisted until 00:30 UTC on August 23. The primary impact was observed in active network reachability measurements.
Technical Details
The event recorded a severity score of 6,544, with the most significant impact occurring between 19:00 and 22:40 UTC. The primary affected signal was ping-slash24, which measures ICMP reachability across IPv4 /24 network prefixes. This signal showed a 15% drop from its peak reachability level during the event.
Other network signals showed varied behavior. The BGP control plane, which governs routing announcements, remained stable with no observed prefix withdrawal. Backscatter measurements, a proxy for aggregate network activity, recorded a significant 81% drop from their peak. The cause has not been publicly attributed.
Connectivity was reported restored by the end of the observation window.
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