U.S. Virgin Islands Experiences BGP Disruption

The U.S. Virgin Islands experienced a Border Gateway Protocol (BGP) disruption on July 29, lasting nearly four hours. The event began at 20:40 UTC and concluded by 00:30 UTC on July 30. The BGP control plane signal recorded a severity score of 676.

Technical Details

The disruption primarily affected the BGP median signal, which measures the control plane visibility of internet routing prefixes. The event lasted for approximately 3.8 hours. A concurrent, more severe drop of 100% was observed in the Merit Network Telescope (merit-nt) backscatter signal, a common proxy for aggregate connectivity. The ping-slash24 signal, which measures ICMP reachability across IPv4 /24 network blocks, showed a 10% drop in reachability. A separate traffic forecast deviation signal, gtr.sarima, was also active but did not show a significant anomaly. The cause has not been publicly attributed.

Network connectivity was reported restored by the end of the observation period.