ThousandEyes, a Cisco company, monitors how ISPs, cloud providers and conferencing services are handling any performance challenges and provides Network World with a weekly roundup of events that impact service delivery. Read on to see the latest analysis, and stop back next week for another update on internet and cloud traffic performance.
Note: We have archived prior-year outage updates, including our reports from 2025, 2024, 2023, and the Covid-19 era.
Internet report for January 26-February 1
ThousandEyes reported 314 global network outage events across ISPs, cloud service provider networks, collaboration app networks, and edge networks (including DNS, content delivery networks, and security as a service) during the week of January 26 through February 1. The total of outage events increased by 33% compared to the 236 outages from the week prior. Specific to the U.S., there were 156 outages, which is up by 5% from 148 outages the week prior. Here’s a breakdown by category:
- ISP outages: Globally, ISP outages doubled, increasing from 86 to 175, a 103% increase week-over-week. In the U.S., ISP outages climbed from 44 to 78, up 77%.
- Public cloud network outages: Globally, public cloud network outages decreased from 90 to 70, a 22% week-over-week decline. In the U.S., outages dropped from 79 to 56, a 29% decrease.
- Collaboration app network outages: Globally, collaboration application network outages declined from two to one outage. In the U.S., collaboration application outages remained at one.
Two notable outages
On January 27, Cloudflare, a U.S.-headquartered web infrastructure and website security company that provides content delivery network services, suffered an interruption that impacted its customers in multiple regions, including the U.S., Canada, Germany, Mexico, and the Philippines. The outage lasted a total of two hours and 13 minutes over a two-hour and 23-minute period and was first observed around 1:12 PM EST. It appeared to initially be centered on Cloudflare nodes located in Chicago, IL. Twenty-eight minutes into the outage the nodes exhibiting outage conditions expanded to include nodes located in Chicago, IL, Winnipeg, Canada, and Aurora, CO. The rise in nodes and locations exhibiting outage conditions also appeared to coincide with an increase in the number of downstream customers and partners impacted. The outage was cleared around 3:35 PM EST. Click here for an interactive view.
On January 27, Lumen, a U.S. based Tier 1 carrier (previously known as CenturyLink), experienced an outage that affected customers and downstream partners across multiple regions including the U.S., Belgium, Germany, Italy, Japan, Hong Kong, Sweden, Singapore, Canada, Mexico, India, Brazil, the Philippines, and Australia. The outage, lasting a total of 20 minutes over a period of one hour and 5 minutes, was first observed around 3:30 AM EST and appeared to initially be centered on Lumen nodes located in Washington, D.C., and Detroit, MI. Ten minutes after appearing to clear, nodes located in Washington, D.C., once again began exhibiting outage conditions. Around forty minutes into the outage, nodes located in Washington, D.C., were replaced by nodes located in Los Angeles, CA, in exhibiting outage conditions. A further ten m minutes later the nodes located in Los Angeles, were themselves replaced once again by nodes located in Washington, D.C. in exhibiting outage conditions. The outage was cleared around 4:35 AM EST. Click here for an interactive view.
Internet report for Jan. 19-Jan. 25
ThousandEyes reported 236 global network outage events across ISPs, cloud service provider networks, collaboration app networks, and edge networks (including DNS, content delivery networks, and security as a service) during the week of January 19 through January 25. The total of outage events decreased by 10% compared to the 263 outages from the week prior. Specific to the U.S., there were 148 outages, which is down by <1% from 149 outages the week prior. Here’s a breakdown by category:
- ISP outages: Globally, ISP outages fell from 113 to 86, a 24% decrease week-over-week. In the U.S., ISP outages declined from 53 to 44, down 17%.
- Public cloud network outages: Globally, public cloud network outages increased from 87 to 90, a 3% week-over-week rise. In the U.S., outages climbed from 66 to 79, an increase of 20%.
- Collaboration app network outages: Globally, collaboration application network outages increased to 2 outages, and to 1 outage in the U.S.
Two notable outages
On January 21, Unitas Global, a U.S.-based network transit provider that merged with PacketFabric in 2023 and is now operating as PacketFabric, experienced an outage that impacted customers and downstream partners across multiple regions, including the U.S., Canada, Australia, and the Philippines. The outage lasted a total of 14 minutes over a 50-minute period and was first observed around 10:05 AM EST. It appeared to initially be centered on Unitas Global nodes located in Dallas, TX. Around 30 minutes after appearing to clear, the nodes located in Dallas, TX, once again began exhibiting outage conditions, and were joined briefly by nodes located in Austin, TX. in exhibiting outage conditions. A further five minutes into the outage, the nodes located in Austin, TX, were replaced by nodes located in Chicago, IL, in exhibiting outage conditions. The outage was cleared around 10:55 AM EST. Click here for an interactive view.
On January 25, GTT Communications, a Tier 1 provider headquartered in Tysons, VA, experienced an outage that affected some of its partners and customers across multiple regions including the U.S., Singapore, Taiwan, Japan, and Ireland. The disruption, which lasted a total of 16 minutes over a 25-minute period, was first observed around 6:35 PM EST and appeared to center on GTT nodes in Washington, D.C. Five minutes after appearing to clear, nodes located in Washington, D.C., once again began exhibiting outage conditions. The outage was cleared around 7:00 PM EST. Click here for an interactive view.
Internet report for Jan. 12-Jan. 18
ThousandEyes reported 263 global network outage events across ISPs, cloud service provider networks, collaboration app networks, and edge networks (including DNS, content delivery networks, and security as a service) during the week of January 12 through January 18. The total of outage events increased by 3% compared to the 255 outages from the week prior. Specific to the U.S., there were 149 outages, which is up by 10% from 135 outages the week prior. Here’s a breakdown by category:
- ISP outages: Globally, ISP outages decreased from 115 to 113, a 2% decrease. In the U.S., however, ISP outages increased from 39 to 53, up 36% week-over-week.
- Public cloud network outages: Globally, public cloud network outages increased from 76 to 87, up 14% week-over-week. In the U.S., outages rose from 57 to 66, an increase of 16%.
- Collaboration app network outages: Globally and in the U.S., collaboration application network outages decreased from one to zero.
Two notable outages
On January 16, 2026, Madgenius, a U.S.-based hosting and infrastructure service provider headquartered in Apple Valley, MN, experienced an outage that impacted multiple downstream partners across multiple regions, including the U.S., and the Netherlands. The outage, lasting one hour and 16 minutes, was first observed around 12:15 AM EST and appeared to center on Madgenius nodes located in Columbus, OH. The outage was cleared around 1:25 AM EST. Click here for an interactive view.
On January 17, TATA Communications (America) Inc., a global ISP and part of the Indian-owned TATA Communications, experienced an outage that impacted many of its downstream partners and customers in multiple regions, including the U.S., Indonesia, Singapore, Malaysia, the United Arab Emirates, the Philippines, the U.K., Thailand, Spain, Australia, South Korea, Greece, Japan, and India. The outage, lasting 23 minutes, was first observed around 12:03 PM EST, and initially appeared to be centered on TATA nodes located in Singapore. Five minutes into the outage, the nodes located in Singapore were joined by nodes located in Los Angeles, CA, and Santa Clara, CA, in exhibiting outage conditions. By 12:10 PM EST, the nodes located in Santa Clara, CA, appeared to clear and were replaced by nodes located in Tokyo, Japan, in exhibiting outage conditions. Around 12:15 PM EST, TATA nodes located in San Francisco, CA, joined nodes located in Singapore, Los Angeles, CA, and Tokyo, Japan, in exhibiting outage conditions. Shortly thereafter, the nodes located in San Francisco, CA, appeared to clear and were replaced by nodes located in Toyohashi, Japan, in exhibiting outage conditions. The outage was cleared around 12:30 PM EST. Click here for an interactive view.
Internet report for Jan. 5-Jan. 11
ThousandEyes reported 255 global network outage events across ISPs, cloud service provider networks, collaboration app networks, and edge networks (including DNS, content delivery networks, and security as a service) during the week of January 5 through January 11. The total of outage events increased by 28% compared to the 199 outages from the week prior. Specific to the U.S., there were 135 outages, which is up by 90% from 71 outages the week prior. Here’s a breakdown by category:
- ISP outages: Globally, ISP outages increased from 105 to 115, a 10% rise. In the U.S., ISP outages grew from 26 to 39, up 50% week-over-week.
- Public cloud network outages: Globally, public cloud network outages increased from 59 to 76, up 29% week-over-week. In the U.S., outages rose from 37 to 57, an increase of 54%.
- Collaboration app network outages: Globally and in the U.S., collaboration application network outages increased from zero to one outage.
Two notable outages
On January 6, Charter Communications, a U.S.-based ISP operating as Spectrum, experienced an outage that affected customers and downstream partners across multiple regions, including the U.S., Japan, Australia, Ireland, Germany, France, the U.K., South Korea, India, and Brazil. The outage lasted a total of one hour and 10 minutes over a one hour and 43-minute period and was first observed around 6:32 AM EST. It appeared to initially be centered on Charter nodes located in New York, NY. Around forty-three minutes into the outage, nodes located in Washington, D.C., also began exhibiting outage conditions. The nodes located in Washington, D.C., appeared to clear around five minutes later. A further 30 minutes later the nodes located in New York, NY, were joined by nodes located in Houston, TX, in exhibiting outage conditions. The nodes located in Houston, TX, also appeared to clear five minutes later, leaving nodes located in New York, NY, for the reminder of the outage. The outage was cleared around 8:15 AM EST. Click here for an interactive view.
On January 11, Verizon Business, a U.S.-based network service provider, experienced an outage that affected customers and partners across multiple regions, including the U.S., the U.K., Singapore, and Switzerland. The outage lasted a total of 24 minutes over a 50-minute period, and was first observed around 1:05 AM EST. It appeared to be centered on Verizon nodes located in Austin, TX. Around twenty minutes into the outage, the number of nodes exhibiting outage conditions appeared to increase. This rise also appeared to coincide with an increase in the number of downstream customers and partners impacted. The outage was cleared around 1:55 AM EST. Click here for an interactive view.
Internet report for Dec. 29, 2025-Jan. 4, 2026
ThousandEyes reported 199 global network outage events across ISPs, cloud service provider networks, collaboration app networks, and edge networks (including DNS, content delivery networks, and security as a service) during the week of December 29 through January 4. The total of outage events decreased by 14% compared to the 231 outages from the week prior. Specific to the U.S., there were 71 outages, which is down by 29% from 100 outages the week prior. Here’s a breakdown by category:
- ISP outages: Globally, ISP outages declined from 136 to 105, a 23% decrease. In the U.S., ISP outages dropped from 51 to 26, down 49% week-over-week.
- Public cloud network outages: Globally, public cloud network outages increased from 47 to 59, up 26% week-over-week. In the U.S., outages rose from 22 to 37, an increase of 68%.
- Collaboration app network outages: Both globally and in the U.S., collaboration application network outages remained at zero.
Cisco ThousandEyes
Two notable outages
On January 2, Hurricane Electric, a network transit provider, headquartered in Fremont, CA, experienced an outage that impacted customers and downstream partners across multiple regions, including the U.S., Japan, South Korea, Indonesia, Taiwan, India, and Singapore. The outage, lasting one hour and 1 minute, was first observed around 3:05 PM EST and initially appeared to center on Hurricane Electric nodes located in Los Angeles, CA. Five minutes into the outage, the nodes located in Los Angeles, CA, were joined by Hurricane Electric nodes located in Phoenix, AZ, in exhibiting outage conditions. This coincided with an increase in the number of downstream partners and countries impacted. Around 10 minutes into the outage, all nodes, except those located in Los Angeles, CA, appeared to clear. The outage was cleared at around 4:10 PM EST. Click here for an interactive view.
On December 31, Cogent Communications, a multinational transit provider based in the U.S., experienced an outage that impacted multiple downstream providers as well as Cogent customers across various regions, including the U.S., France, the Netherlands, South Africa, Spain, and South Korea. The outage, which lasted 9 minutes, was first observed around 7:50 PM EST and appeared to initially center on Cogent nodes located in Washington, D.C. Around five minutes after first being observed, nodes located in Washington, D.C., appeared to clear and were replaced by nodes located in Boston, MA, in exhibiting outage conditions. The outage was resolved around 8:00 PM EST. Click here for an interactive view.