Forced offline: the Q3 2024 Internet disruption summary
October 29, 2024
The third quarter of 2024 was particularly active, with quite a few significant Internet disruptions. ...
Impact of Verizon’s September 30 outage on Internet traffic
October 01, 2024
On Monday, September 30, customers on Verizon’s mobile network in multiple cities across the United States reported experiencing a loss of connectivity. HTTP request traffic data from Verizon’s mobile ASN (AS6167) showed nominal declines across impacted cities. ...
Cloudflare incident on September 17, 2024
September 20, 2024
On September 17, 2024, during planned routine maintenance, Cloudflare stopped announcing 15 IPv4 prefixes, affecting some Business plan websites for approximately one hour. During this time, IPv4 traffic for these customers would not have reached Cloudflare and users attempting to connect to websites using addresses within those prefixes would have received errors. ...
A recent spate of Internet disruptions
August 01, 2024
Cloudflare Radar is constantly monitoring the Internet for widespread disruptions. Here we examine several recent noteworthy disruptions detected in the first month of Q3, including traffic anomalies observed in Bangladesh, Syria, Pakistan, and Venezuela....
Q2 2024 Internet disruption summary
July 16, 2024
Government directed shutdowns and cable cuts were both significant sources of Internet outages in Q2 2024. This post explores these disruptions, as well as others caused by power outages, maintenance,...
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June 26, 2024
Cloudflare incident on June 20, 2024
A new DDoS rule resulted in an increase in error responses and latency for Cloudflare customers. Here’s how it went wrong, and what we’ve learned...
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June 21, 2024
Exam-ining recent Internet shutdowns in Syria, Iraq, and Algeria
Similar to actions taken over the last several years, governments in Syria, Iraq, and Algeria have again disrupted Internet connectivity nationwide in an attempt to prevent cheating on exams. We investigate how these disruptions were implemented, and their impact...
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May 13, 2024
East African Internet connectivity again impacted by submarine cable cuts
On Sunday, May 12, issues with the EASSy and Seacom submarine cables again disrupted connectivity to East Africa, impacting a number of countries previously affected by a set of cable cuts that occurred nearly three months earlier...
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April 29, 2024
Q1 2024 Internet disruption summary
The first quarter of 2024 kicked off with quite a few Internet disruptions. Perhaps most interestingly, RPKI, DNS, and DNSSEC issues were among the technical problems that disrupted connectivity for subscribers across multiple network providers...
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April 08, 2024
Major data center power failure (again): Cloudflare Code Orange tested
Just four months after a complete power outage at a critical data center we were hit with the exact same scenario. Here’s how we did this time, and what’s next...
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March 14, 2024
Undersea cable failures cause Internet disruptions for multiple African countries
Internet connectivity in several African countries was disrupted on March 14, 2024, beginning at approximately 05:00 UTC. Based on published reports and social media posts from impacted network providers, the disruption is believed to be due to multiple undersea cable failures in...
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January 22, 2024
Q4 2023 Internet disruption summary
In this post, we review selected Internet disruptions observed by Cloudflare during the fourth quarter of 2023, supported by traffic graphs from Cloudflare Radar and other internal Cloudflare tools, and grouped by associated cause or common geography...
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December 12, 2023
Cloudflare 2023 Year in Review
The 2023 Cloudflare Radar Year in Review is our fourth annual review of Internet trends and patterns observed throughout the year at both a global and country/region level......
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November 04, 2023
Post mortem on the Cloudflare Control Plane and Analytics Outage
Beginning on Thursday, November 2, 2023, at 11:43 UTC Cloudflare's control plane and analytics services experienced an outage. Here are the details...
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October 25, 2023
Q3 2023 Internet disruption summary
In this post, we review selected Internet disruptions observed by Cloudflare during the third quarter of 2023, supported by traffic graphs from Cloudflare Radar and other internal Cloudflare tools, and grouped by associated cause or common geography...
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October 09, 2023
Internet traffic patterns in Israel and Palestine following the October 2023 attacks
On Saturday, October 7, 2023, attacks from the Palestinian group Hamas launched from the Gaza Strip against the south of Israel started a new conflict in the region. Cloudflare's data shows that Internet traffic was impacted in different ways...
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October 04, 2023
1.1.1.1 lookup failures on October 4, 2023
On 4 October 2023, Cloudflare experienced DNS resolution problems. Some users may have received SERVFAIL DNS responses to valid queries. In this blog, we’re going to talk about what the failure was, why it occurred, and what we’re doing to make sure this doesn’t happen again...
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September 26, 2023
Traffic anomalies and notifications with Cloudflare Radar
Cloudflare Radar now displays country and ASN traffic anomalies in the Outage Center as they are detected, as well as publishing anomaly information via API. We are also launching Radar notifications, enabling users to subscribe to notifications about traffic anomalies...
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September 26, 2023
Gone offline: how Cloudflare Radar detects Internet outages
Cloudflare Radar will be publishing anomalous traffic events for countries and Autonomous Systems (ASes). These events are the same ones referenced above that have been triggering our internal workflow to validate and confirm disruptions...
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