Global internet health check and network outage report

ThousandEyes, which tracks internet and cloud traffic, provides Network World with weekly updates on the performance of ISPs, cloud service providers, and UCaaS providers.

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On May 2, Cox Communications, experienced a disruption affecting Cox Communications customers and partners. The outage was first observed at around 5:41 a.m. EDT apparently centered on Cox nodes in Ashburn, Virginia. Twenty minutes later, Cox nodes in Ohio were also observed exhibiting outage conditions. The 21-minute outage was cleared around 6:05 a.m. EDT. Click here for an interactive view.

Updated May 1

Global outages across all three categories last week decreased from 239 to 213, down 11% compared to the week prior. US outages decreased from 109 to 95, down13%.

Globally, ISP outages decreased from 146 to 139, down 5%, and in the US decreased from 63 to 60, down 5%.

Globally, cloud-provider network outages dropped from 13 to six, and in the US from nine to five.

Globally, collaboration-app network outages decreased from eight to four and in the US they remained at zero.

There were two notable outages:

On April 26, Qwest Communications experienced an outage affecting downstream partners and customers across the US. The 14-minute outage was first observed around 12:20 a.m. EDT, apparently centered on Qwest nodes in Atlanta, Georgia. The outage was cleared around 12:35 a.m. EDT. Click here for an interactive view.

On April 26, Microsoft experienced an outage on its network affecting some downstream partners and access to services running in Microsoft environments in multiple countries including the US, Taiwan, and India. The nine-minute outage was first observed around 1:20 a.m. EDT and appeared to initially center on Microsoft nodes in Atlanta, Georgia, and Cleveland, Ohio.  Around five minutes later the Cleveland nodes appeared to clear. The outage was cleared around 1:30 a.m.EDT. Click here for an interactive view.

Updated April 24

Global outages across all three categories last week increased from 235 to 239, up 2% compared to the week prior. In the US, outages increased from 100 to 109, up 9%.

Globally, the number of ISP outages increased from 137 to 146, up 7%, and in the US they increased from 60 to 63, up 5%.

Globally, cloud-provider network outages increased from 10 to 13 and in the US from eight to nine.

Globally, collaboration-app network outages increased from seven to eight and in the US dropped from one to zero.

Two notable outages:

On April 18, NTT America experienced an outage affecting some customers and downstream partners across the US. The 14-minute outage was first observed around 12:30 a.m. EDT and appeared centered on NTT nodes in San Jose and Los Angeles, California. Around five minutes later, the San Jose nodes appeared to recover. Ten minutes after first being observed, the Los Angeles nodes appeared to recover, too, but nodes in New York, New York, exhibited outage conditions. The outage was cleared around 12:45 a.m.EDT. Click here for an interactive view.

On April 19, Oracle experienced an outage on its network affecting Oracle customers and downstream partners interacting with Oracle Cloud services in multiple countries including the US, Japan, the United Arab Emirates, and Canada. The outage was first observed around 3:25 a.m. EDT and appeared to center on Oracle nodes in Ashburn, Virginia; Washington, DC; Toronto, Canada; Dubai, United Arab Emirates; and Tokyo, Japan. Five minutes later the Dubai and Toronto nodes appeared to recover, but nodes located in Montreal, Canada showed outage conditions. A further five minutes later Dubai nodes once again exhibited outage conditions. Fifteen minutes after first being observed, the Ashburn, Washington, Toronto, Dubai and Tokyo nodes exhibited outage conditions again. The outage lasted 19 minutes in total and was cleared around 3:45 a.m. EDT. Click here for an interactive view.

Updated April 17

Global outages across all three categories last week decreased from 242 to 235, down 3% compared to the week prior. In the US they decreased from 105 to 100, down 5%.

Global ISP outages decreased from 157 to 137, down 13%, and in the US, decreased from 72 to 60, down 17%.

Global cloud-provider network outages increased from nine to 10, and in the US they increased from four to eight.

Global collaboration-app network outages decreased from 12 to seven, and in the US they decreased from four to one.

On April 14, Cogent Communications experienced a 14-minute outage affecting downstream providers and customers in countries including the US, UK, Germany, Luxemburg, South Africa, India, Israel, Spain, France, Singapore, Ireland, Austria, Australia, Italy, and Brazil. First observed around 7:30 p.m. EDT, the outage centered on Cogent nodes in Washington, DC; London; New York; Paris; Frankfurt, Germany; Boston, Massachusetts; and Houston, Texas. Five minutes later, only Paris, Frankfurt, and Marseille, France, nodes showed outage conditions. Five minutes after that, the Paris, Frankfurt, and Marseille, nodes all appeared to clear, but those in London exhibited outage conditions. The outage cleared around 7:45 p.m. EDT. Click here for an interactive view.

On April 15, Oracle experienced an outage affecting its customers and downstream partners interacting with Oracle Cloud services in countries including the US, Canada, the United Arab Emirates, China, and Japan. The outage was first observed around 8:20 p.m. EDT and appeared centered on Oracle nodes in Ashburn, Virginia; Washington, DC; Montreal, Canada; Dubai, United Arab Emirates; and Tokyo, Japan. Fifteen minutes later, all the nodes except those in Montreal appeared to recover. The outage lasted 18 minutes and was cleared around 8:40 p.m. EDT. Click here for an interactive view.

Updated April 10

Global outages across all three categories last week decreased from 265 to 242, down 9% compared to the week prior. In the US, they increased from 95 to 105, up 11%.

Globally, the number of ISP outages decreased from 170 to 157, down 8%, and in the US they increased from 62 to 72, up 16%.

Globally, cloud-provider network outages remained the same as the week prior, at nine, and in the US decreased from six to four.

Globally, collaboration-app network outages more than doubled, increasing from five to 12, and in the US decreased from five to four. 

Three notable outages:

On April 8, Level 3 Communications, a U.S. based Tier 1 carrier, experienced an outage that impacted multiple downstream partners and customers across the U.S. and India. The outage, lasting 24 minutes, was first observed around 4:05 AM EDT and appeared to initially be centered on Level 3 nodes located in Kansas City, MO and San Francisco, CA. Fifteen minutes after first being observed, the nodes located in Kansas City appeared to clear, leaving just the nodes located in San Francisco exhibiting outage conditions. The outage was cleared around 4:30 AM EDT. Click here for an interactive view.

On April 3 and 4, Virgin Media UK, a British based ISP, experienced two outages that impacted the reachability of its network and services to the global Internet. The two outages shared similar characteristics and appeared to impact access for Virgin Media customers in the U.K. predominantly. The first incident took place between ~8:30 PM EDT and ~3:00 AM EDT, while the second began at ~11:20 AM EDT and was resolved around 1:30 PM EDT. A more detailed explanation of the outage can be found here. Click here for an interactive view.

On April 5, Cogent Communications, a U.S. based multinational transit provider, experienced an outage that impacted multiple downstream providers as well as Cogent customers in multiple regions, including the U.S., the Netherlands, Germany, and the Czech Republic. The outage, lasting a total of 19 minutes, was divided into two occurrences distributed over a thirty-minute period. The first occurrence was observed around 4:00 PM EDT and appeared to initially be centered on nodes located in Boise, ID. Five minutes after appearing to clear, the nodes located in Boise appeared to exhibit outage conditions once again. Twenty-five minutes after first being observed, the Cogent nodes exhibiting the outage conditions extended to include nodes located in Cleveland, OH. As the Cogent nodes impacted increased, so did the number of customer networks and providers impacted. The outage was cleared around 4:30 PM EDT. Click here for an interactive view.

Updated April 3

Global outages across all three categories last week increased from 181 to 265, up 46% compared to the week prior. In the US, they increased from 65 to 95, also up 46%.

Globally, the number of ISP outages increased from 121 to 170, up 40%, and in the US they increased from 44 to 62, up 41%.

Globally, cloud-provider network outages increased from six to nine, and in the US from one to six.

Globally, collaboration-app network outages increased from one to five and in the US increased from zero to five. 

Two notable outages:

On April 1, Cogent Communications experienced an outage affecting multiple downstream providers as well as Cogent customers in countries including the US, Canada, the UK, Israel, China, Mexico, Singapore, Australia, Germany, Portugal, India, Spain, Switzerland, New Zealand, Philippines, Costa Rica, Brazil, and Japan. The nine-minute outage was first observed around 1:25 a.m. EDT centered on Cogent nodes in Washington, DC; Atlanta, Georgia; and Bilbao, Spain. Five minutes later, nodes in Philadelphia, Pennsylvania; New York, New York; and El Paso and Houston, Texas; also showed outage conditions. The outage was cleared around 1:35 a.m. EDT. Click here for an interactive view.

On April 1, Oracle experienced a nine-minute network outage affecting Oracle customers and downstream partners interacting with Oracle Cloud services in multiple countries including the US, Luxembourg, Finland, Mexico, South Africa, the UK, Germany, and Canada. First observed around 2:55 a.m. EDT, the outage appeared centered on Oracle nodes in Ashburn, Virginia; Washington, DC; Phoenix; and Cleveland, Ohio. Five minutes later, the Cleveland nodes appeared to recover, along with some nodes in Ashburn, Washington, and Phoenix. This reduced the number of affected countries to the US, South Africa, Finland, the UK, and Canada. The outage was cleared around 3:05 a.m. EDT. Click here for an interactive view.

Updated March 27

Global outages across all three categories last week decreased from 247 to 181, down 27% compared to the week prior. In the US, outages decreased from 82 to 65, down 21%.

Globally, the number of ISP outages decreased from 163 to 121, down 26%, while in the US they decreased from 61 to 44, down 28%.

Globally, cloud-provider network outages decreased from 11 to six, and in the US they dropped from five to one.

Globally, collaboration-app network outages decreased from seven to one, and in the US they dropped from four to zero.

Two notable outages:

On March 23, TATA Communications (America) experienced an outage affecting downstream partners and customers in multiple countries including the US, the UK, Canada, Australia, and China. First observed around 12:05 p.m. EDT, the outage, lasted 13 minutes in total, divided into two episodes over a 20-minute period. The first, nine-minute outage initially appeared centered on TATA nodes in Los Angeles. Five minutes into the outage, nodes exhibiting outage conditions included those in San Francisco. Five minutes after the first occurrence cleared, the outage reappeared, with San Francisco and Newark, New Jersey nodes exhibiting outage conditions. The outage was cleared around 12:25 p.m. EDT. Click here for an interactive view.

On March 26, GTT Communications experienced an outage affecting some of its partners and customers across multiple countries, including the US, Spain, and the UK. The eight-minute outage was first observed around 9:30 a.m. EDT and appeared to initially center on GTT nodes  in Atlanta and Wisconsin. Five minutes after first being observed, the Wisconsin ndes appeared to clear. The outage was cleared around 9:40 a.m. EDT. Click here for an interactive view.

Updated March 20

Global outages across all three categories last week decreased from 271 to 247, down 9% compared to the week prior. In the US, outages decreased from 105 to 82, down 22%.

Global ISP outages decreased from 191 to 163, down 15%, and in the US they decreased from 83 to 61, down 27%.

Global cloud-provider network outages jumped from three to 11, and in the US increased from two to five.

Global collaboration-app network outages increased from three to seven, and in the US from one to four.

On March 14, NTT America experienced an outage affecting customers and downstream partners across multiple countries including the US, Brazil, the UK, Australia, and China. The outage, lasting a total of 18 minutes, was divided into two occurrences over a 35-minute period. Initially observed around 11:40 a.m. EDT, the first occurrence appeared to center on NTT nodes in New York and Dallas. Around five minutes after the New York and Dallas nodes appeared to clear, nodes in San Jose, California, began exhibiting outage conditions. The outage cleared around 12:205 p.m. EDT. Click here for an interactive view.

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