Global - Internet Instability

Since the initial impact, Teraswitch’s Network Engineering team has identified the instability as a routing software failure triggered during a routine configuration change. We have removed the triggering condition and implemented safeguards to prevent recurrence. The network remains stable while we complete software upgrades and permanent remediation.

Our current timeline of events is that the instability was triggered at approximately 19:09:21–27 UTC on July 29th 2026, and lasted for ~5 minutes.

More updates and a complete RCA will be released in future updates.

Teraswitch is currently working on mitigations related to this issue, although traffic issues have settled.

At this time, it appears a bulk of the high-capacity US to EU cables had a fault around the same time. Our NY to London path, which had been cut and resolved earlier today, went down again, and our Ashburn to Frankfurt path suffered an outage around the same time.

At this time, the network has stabilized and we are working to ensure any additional events are not as impactful to traffic.

Teraswitch is looking into general Internet Instability.