Weekly internet health check, US and worldwide

ThousandEyes, which tracks internet and cloud traffic, provides Network World with weekly updates on the performance of three categories of service provider: ISP, cloud provider, UCaaS.

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About 1:10 a.m. EDT on June 9, Zayo Group experienced an outage that affected some of its partners and customers in countries including the US, Germany, the Netherlands, Canada, the UK, Austria, Hong Kong, Australia, Brazil, Japan, Russia and Malaysia. The outage lasted around 54 minutes and appeared to center on Zayo nodes in Denver, Colorado, and Salt Lake City, Utah. Five minutes later, the Salt Lake City nodes appeared to recover but outage conditions started in nodes in Seattle, Washington, and London, UK. Thirty minutes into the outage it grew to include nodes in Chicago, Illinois, before being cleared around 2:10 a.m. EDT.

Updated June 7

Global outages across all three categories last week decreased from 265 to 222, a 16% decrease. In the US they dropped from 128 to 80, a 38% decrease.

ISP outages globally last week decreased from 211 to 182, a 14% decrease, while in the US they decreased from 105 to 71, a 32% decrease.

Globally, cloud provider network outages decreased from 9 to 4 and from two to zero in the US.

Collaboration-app network outages worldwide dropped from six to one and in the US dropped from five to none.

About 3 a.m. EDT on June 2, the ISP PCCW, experienced a 19-minute outage impacting some of its customers and networks in the US. It appeared to center on PCCW infrastructure located in Ashburn, Virginia, and was cleared around 3:25 a.m. EDT.

Around 6:45 p.m. on June 1, Microsoft experienced a 29-minute outage that impacted some downstream partners and access to services running on Microsoft environments. It appeared to be centered on Microsoft nodes located in Dublin, Ireland and was cleared around 7:15 p.m. EDT. Given the duration and timing relative to the location of the nodes at the cente of the outage, it is likely to have been a maintenance exercise.

Around 1:05 a.m. EDT on June 1, Flag Telecom Global Internet experienced an outage on their network that lasted around an hour and 51 minutes over a three-hour period. It affected customers and downstream partners in countries including the US, Australia, India, France, the Netherlands, Singapore, the Philippines, Hong Kong, Germany, Brazil, and Taiwan. It appeared to be centered on Flag Telecom nodes located in Singapore. Five minutes after the initial outage, Flag Telecom nodes in Hong Kong also exhibited outage conditions and coincided with an increase in the number of impacted countries, customers, and partners. After a further five minutes, the nodes located in Hong Kong appeared to recover for 10 minutes before exhibiting outage conditions again for five more minutes. Flag Telecom nodes located in Singapore also appeared to recover about 50 minutes after the initial outage. Around 2 a.m. EDT, the nodes located in Singapore again begin exhibiting outage conditions. A series of varying-duration outages, all centered on Singapore nodes, were observed for the next two hours. The outage was cleared around 4:05 a.m. EDT.

Update May 31

Global outages across all three categories last week decreased from 363 to 265, a 27% drop, while in the US they decreased from 197 to 128, a 35% decline.

ISP outages globally decreased from 284 to 211, down 26%. In the US they decreased from 175 to 105, a 40% drop.

Worldwide cloud-provider network outages decreased from 12 to 9 outages, and remained the same in the US with two.

Globally, collaboration-app network outages increased from five to six, and in the US they increased by two, from three to five.

There were two major outages during the week. At 12:15 a.m. EDT on May 26, Verizon Business experienced an outage affecting customers and partners across countries including the US, Ireland, Poland, the Netherlands, Canada, the UK, Germany, and India. The outage appeared to be centered on Verizon Business nodes in New York, New York, and was divided into two occurrences spanning 45 minutes. The first lasted around nine minutes and initially appeared to be clearing, with the number of affected parties dropping, but about 20 minutes later the outage returned and lasted about 23 minutes, again centered on nodes in New York. 

Around 1:35 p.m. EDT May 26, Cogent Communications experienced a series of outages totalling 48 minutes over the span of an hour and 10 minutes that impacted downstream providers and customers globally. The initial outage centered on Cogent nodes in Las Vegas, Nevada, and lasted around 12 minutes. Then the Cogent environment was stable for 10 minutes before experiencing a second occurrence on nodes in Dallas and Houston, Texas. Five minutes later, the Cogent node located in Dallas appeared to recover, but nodes in Kansas City, Missouri, experienced outages. After five more minutes the Kansas City nodes recovered, but nodes in Denver, Colorado, experienced outages.  Forty-five minutes after the initial outage was observed, a 24-minute outage was observed on nodes in Dallas, Houston, and Kansas City. Ten minutes into the third occurrence, the number of locations exhibiting outage conditions expanded to include Salt Lake City, Utah, Oklahoma City, Oklahoma, and Denver. As the Cogent nodes involved increased, so did the number of customer networks that were affected. The outage was cleared around 2:45 p.m. EDT.

Update May 24

Global outages across all three categories jumped from 252 to 363, last week, a 44% increase. In the U.S. outages increased from 123 to 197, a 60% increase.

Globally, ISP outages jumped from 180 to 284, up 58%, while in the US, ISP outages increased from 98 to 175, up 79%.

Worldwide, cloud-provider network outages declined slightly from 14 to 12 outages, but in the US, they increased from one to two. 

Collaboration-app network outages worldwide increased from three to five, and in the US increased from one to three.

There were three notable outages during the week.

Around 1:30 p.m. on May 20, Slack experienced an interruption to its business-communication platform that lasted about 25 minutes and affected users accessing the services. A number of internal server errors were observed. Slack identified the cause as a code change that inadvertently affected some workspaces. Slack reverted the change and restore services by 1:55 p.m. EDT.

About 8:55 a.m. EDT on May 19, Coinbase experienced an interruption that lasted about two hours and affected global access to the Coinbase site and application. Connectivity and access across the network appeared to be unimpaired during the interruption, with initial requests simply timing out with system errors indicating system congestion. An hour and half after the outage was first observed, services began to be restored, with access in APAC and EMEA still affected. The outage was cleared around 10:45 a.m. EDT.

On May 17, Hurricane Electric experienced an outage that was divided into three instances over an hour and a half that affected users across countries including the US, Australia, Singapore, Hong Kong, the UK, Brazil, Germany, South Africa, the Netherlands, and Canada. The first period was observed around 1:43 p.m. EDT centered on Hurricane Electric nodes in San Francisco and San Jose, California. After five minutes, the San Francisco nodes appeared to recover, reducing the scope of the outage. But five minutes after that, San Francisco nodes exhibited outage conditions again. Five minutes after this occurrence cleared, a second one lasting three minutes was observed centered on the San Jose and San Francisco nodes. Around 2:15 p.m. EDT, the nodes appeared to recover, temporarily clearing the outage, but an hour later, those two nodes exhibited outage conditions again before clearing after eight minutes. The total outage lasted around 26 minutes and was cleared around 3:25 p.m. EDT.

Update May 17

Global outages across all three categories last week increased from 237 to 252, up 6%, while in the US, they increased from 95 to 123, a 29% jump.

ISP outages globally increased from 168 to 180, and in the US they increased from 76 to 98.

Cloud-provider network outages worldwide increased from 13 to 14 but dropped from four to one in the US.

Globally, collaboration app network outages dropped from four to three, and in the US from two to one.

There were three significant outages this week.

About 3:30 p.m. on May 12, NetActuate experienced an outage affecting downstream partners and customers in the US. It lasted around 13 minutes overall, divided into two occurrences spanning a 30-minute period. The first lasted four minutes and appeared to center on NetActuate nodes located in Raleigh, North Carolina. The outage reappeared 15 minutes later and lasted nine minutes and centered on the Raleigh nodes and nodes in Durham, North Carolina, increasing the number of customers affected. The nodes in Durham cleared five minutes into the second period of the outage. The outage was cleared around 4:05 p.m. EDT.

About 10:15 p.m. EDT on May 13, TATA Communications (America) experienced an outage affecting downstream partners and customers in countries including the US, the UK, Australia, India, China, Germany, the Netherlands, Japan, Hong Kong, Brazil, Switzerland, Republic of Korea, and Canada. The outage lasted 35 minutes and was divided into two periods over 55 minutes. The first period lasted around nine minutes and appeared to be centered on TATA nodes in Tokyo, Japan. About 10 minutes after it cleared, the outage reappeared, centering on TATA nodes located in Hong Kong and after another five minutes expanding to TATA nodes in Los Angeles, California. The nodes in Hong Kong appeared to clear after 15 minutes, leaving just the Los Angeles nodes exhibiting outage conditions. This second period of the outage lasted 26 minutes and was cleared around 11:10 p.m. EDT.

About 5:10 p.m. EDT on May 11, Salesforce experienced an interruption that left users able to reach the Salesforce front-end, but experiencing issues logging on and navigating to the Salesforce Sales Cloud, Marketing Cloud, Commerce Cloud, and Experience Cloud. That indicated internet and network connectivity for end users was functioning. Salesforce identified issues with its domain name system that had a cascading effect on its services. A fix was implemented around 7:45 p.m. EDT, and the outage was cleared about 10:15 p.m.EDT.

Update May 10

Global outages across all three categories last week decreased from 243 to 237, while in the US they decreased from 117 to 95.

Globally, the number of ISP outages increased by one, from 167 to 168. In the US they dropped from 100 to 76, a 24% decrease compared to the week prior.

Cloud provider network outages dropped 52% from 27 to 13 worldwide. In the US, they doubled from two to four.

Collaboration app network outages increased from three to four globally and stayed at two in the US.

There were two notable outages during the week.

Around 6 p.m. EDT on May 3, Cloudflare experienced a disruption to its Magic Transit service when some customers began experiencing significant packet loss at Cloudflare’s network edge. The outage appeared to impact Cloudflare's infrastructure across the globe, with packet loss occurring at varying levels for approximately two hours. At around 8 p.m. EDT, Cloudflare began implementing a fix for the issue, and announced that it was resolved just after 9 p.m. EDT.

Around 3:35 a.m. EDT on May 7, PCCW experienced an outage impacting some of its customers and networks in multiple countries including, the US, Australia, Brazil, and China. The outage lasted around 22 minutes and was divided into two periods over a half-hour span, the first of which appeared to center on PCCW infrastructure located in Ashburn, Virginia. It lasted about 18 minutes. Five minutes later it recurred, again centered in Ashburn, but with the outage condition including infrastructure in New York, New York. It lasted lasted around 4 minutes and was cleared around 4:05 a.m. EDT.

Update May 3

The number of outages globally across all three categories  decreased slightly last week from 246 to 243. In the US, outages decreased from 123 to 117.

The number of ISP outages worldwide increased from 162 to 167, while in the US they increased from 92 to 100.

Cloud-provider network outages remained at 27 overall and went down in the US from five to two.

Globally, collaboration-app network outages remained at three and dropped from three to two in the US.

There were three notable outages during the week.

At 7:36 a.m. EDT on April 27, TATA Communications (America), experienced an outage affecting many of its downstream partners and customers in countries including the US, Australia, India, Japan, and the Philippines. The outage affected TATA nodes in Ashburn, Virginia, and appeared to clear after five minutes, but came back around 8 a.m. EDT centered on TATA nodes in Chicago, Illinois, and Los Angeles, California. The Chicago nodes appeared to recover 10 minutes later, leaving only the nodes in Los Angeles exhibiting outage conditions. About 10 minutes after that, nodes in Hong Kong began exhibiting outage conditions. In total, the outage lasted around 29 minutes, divided into two occurrences over the course of an hour and was cleared around 8:25 a.m. EDT.

AT 12:40 a.m. EDT on April 29, Hurricane Electric experienced an outage affecting users across countries including the US, Spain, Russia, and Ireland. It affected Hurricane Electric nodes in Ashburn, Virginia, and New York, New York. After five minutes, the nodes in New York appeared to recover, reducing the impact to US users only. Around 12:50 a.m. EDT, the nodes in Ashburn appeared to recover, temporarily clearing the outage. But five minutes later the nodes located in New York began exhibiting outage conditions again before clearing after three minutes. The total outage lasted around 11 minutes, consisting of two periods over half an hour. The issue was cleared around 1 a.m. EDT.

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