2026 Network Outage Report and Internet Health Check
Network World, Wednesday, November 4th, 2026
ThousandEyes counted 601 global network outages for Oct. 26 to Nov. 1, up 31% week over week, including incidents at Zayo and Arelion.
Network World publishes weekly outage data from ThousandEyes, a Cisco company, covering ISPs, cloud providers, collaboration apps and edge networks.
ThousandEyes reported 601 global outage events for the week of October 26 through November 1, a 31% increase from 459 the week before, while U.S. outages fell 14% to 253.
On October 27, Tier 1 carrier Zayo Group had an outage affecting customers in many countries that lasted 18 minutes over a 55-minute period, first centered on Los Angeles nodes and then on Denver nodes.
On November 1, Arelion (formerly Telia Carrier) had a 21-minute outage centered on Dallas nodes that affected U.S. customers and downstream partners.