British Virgin Islands connectivity disruption lasted nearly 12 days

British Virgin Islands experienced a significant, prolonged disruption to its internet connectivity beginning on July 31. The event, which lasted nearly 12 days, was characterized by a severe degradation in the network control plane, with restoration observed around 00:30 UTC on August 12.

Technical Details

The disruption recorded a severity score of 33,288, primarily driven by a sustained anomaly in the Border Gateway Protocol (BGP) signal. BGP, which governs the exchange of routing information between networks, showed a median prefix count of 148 throughout the event, indicating a persistent reduction in the global visibility of the territory’s network prefixes.

Other measurement signals showed varying impacts. The gtr-norm signal, a normalized measure of traffic flow, dropped by 78% from its peak. The merit-nt signal, a proxy for aggregate connectivity based on backscatter analysis, fell to zero, indicating a complete loss of measurable background traffic. Active probing for ICMP reachability across IPv4 /24 prefixes (ping-slash24) showed a more modest 5% decline from peak levels.

The cause has not been publicly attributed.

Connectivity was reported restored at the end of the observation period.