ThousandEyes has documented significant fluctuations in global network outages for 2025, centering on issues faced by ISPs and cloud service providers.
Internet Report Highlights
Global Overview
During the week spanning September 22-28, ThousandEyes recorded 305 outage events, a slight increase from 302 the previous week. The U.S. specifically witnessed a rise from 161 to 171 outages, marking a 6% increase. The breakdown was as follows:
- ISP Outages: Notably, global ISP outages surged by 26%, from 137 to 172. In the U.S., they doubled from 42 to 84.
- Public Cloud Outages: Conversely, public cloud outages experienced a 35% decrease globally, falling from 102 to 66, and in the U.S., they dropped from 81 to 45.
- Collaboration App Outages: These outages remained unchanged at zero for both global and U.S. regions.
Notable Outages
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Zayo Group: On September 26, Zayo faced a 32-minute outage affecting multiple regions including parts of the U.S. and Europe. The issue began around 11:28 PM EDT and was focused on nodes in Chicago, IL. It was resolved by around 12:35 AM EDT.
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Cogent Communications: On September 24, Cogent encountered a 33-minute disruption that affected multiple upstream providers and customers across the U.S. and internationally. It began around 5:20 AM EDT, affecting nodes in Salt Lake City, UT, and later Seattle, WA. The outage concluded by 6:35 AM EDT.
Trends from Earlier Reports
From September 15-21, 302 global outages were reported, with ISP outages dropping from 145 to 137, while public cloud outages rose slightly from 96 to 102. The performance of collaboration applications has remained stable, with no reported outages for consecutive weeks.
Conclusion
The fluctuation in outages demonstrates the ongoing challenges faced by various internet service providers and cloud services, highlighting the importance of monitoring infrastructure resilience as businesses increasingly rely on these services.
For more detailed insights from past reports, ThousandEyes provides interactive views of each incident linked throughout their documents.
