ThousandEyes, a Cisco company that tracks global internet and cloud traffic, published their latest report on network outages, summarizing the data for the week of August 27 to September 2, 2026.
Internet Health Check for July 27-August 2
During this week, a total of 514 global network outage events were reported, which shows a decrease of 16% from the 610 outages of the previous week. Specifically, 366 outages occurred in the U.S., marking a 20% decrease from 457 outages the prior week. The breakdown by category includes:
- ISP Outages: A global reduction from 273 to 222, with U.S. outages declining from 185 to 124.
- Public Cloud Network Outages: Dropped from 244 to 204 globally, and from 228 to 192 in the U.S..
- Collaboration App Network Outages: Remained at zero for both global and U.S. statistics.
Notable Outages This Week
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AT&T: On July 27, AT&T reported an outage affecting customers across the U.S. Initially observed in New York and Chicago, it lasted about 20 minutes and was cleared by 3:50 AM EDT.
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Liberty Global: On July 30, this European provider faced a disruption affecting several regions, including the U.S. and parts of Asia, lasting 1 hour and 7 minutes, beginning at 1:20 AM EDT and resolving by 2:30 AM EDT.
Internet Report for Previous Weeks
The report also covers previous weeks, revealing fluctuating patterns in network outages, each observed with category-wise breakdowns and notable outages from various providers:
- July 20-26: 610 events total, including a notable Microsoft outage on July 23 that affected partners and customers globally for about 1 hour and 3 minutes.
- July 13-19: Reports indicated 587 outages, with a significant incident involving the Zayo Group lasting 13 minutes across several regions.
- July 6-12: Included 509 outages, highlighting the Comcast Communications issue affecting users in both U.S. and Canada.
Other Reporting Instances
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June 29 – July 5: 443 outages with notable incidents from Cogent Communications and Arelion affecting multiple regions for several minutes.
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April 20 – April 26: From a series of outages from various providers like Verizon Business and Zayo Group, the increase marked 264 events showing expansion concerns for major ISPs.
The report provides a comprehensive view of network performance, shedding light on systemic issues across large-scale networks and service providers, crucial for IT operations and dependencies on cloud and internet services.
To view the complete details and data insights, visit ThousandEyes.
