Guinea Experiences BGP Control Plane Disruption Lasting Over Nine Hours

Guinea’s internet connectivity experienced a control plane disruption on July 20-21, 2026, affecting the visibility of network routing information. The event lasted approximately nine hours and was primarily characterized by a significant anomaly in the Border Gateway Protocol (BGP) signal.

Technical Details

The disruption began at 15:15 UTC on July 20 and concluded by 00:30 UTC on July 21, spanning over nine hours. The event recorded a severity score of 736, with the primary impact observed on the BGP control plane signal. The BGP signal measures the visibility of network routing prefixes and their availability for global traffic exchange. The signal’s median value dropped by approximately 1% from its peak during the observation period.

Other network health indicators showed less pronounced deviations. The ping-slash24 signal, which measures ICMP reachability across IPv4 network blocks, recorded a 10% drop from its peak. The gtr-norm signal, a normalized traffic volume indicator, showed a more substantial 33% deviation from its expected baseline. The cause has not been publicly attributed.

Connectivity was reported restored by the end of the observation window.