October 04, 2023 7:40 PM
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...
September 26, 2023 1:00 PM
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...
September 26, 2023 1:00 PM
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...
July 27, 2023 1:05 PM
In this post, we review selected Internet disruptions observed by Cloudflare during the second quarter of 2023, supported by traffic graphs from Cloudflare Radar and other internal Cloudflare tools, and grouped by associated cause or common geography...
July 11, 2023 8:48 AM
On July 9, 2023, users in the Asia Pacific region experienced connection errors due to origin DNS resolution failures to .com and .net TLD nameservers...
April 12, 2023 1:00 PM
In this post, we review selected Internet disruptions observed by Cloudflare during the first quarter of 2023, supported by traffic graphs from Cloudflare Radar and other internal Cloudflare tools, and grouped by associated cause or common geography...
April 04, 2023 6:57 PM
UK ISP Virgin Media (AS5089) experienced several outages on April 4, 2023. We examine the impact to Internet traffic, availability of Virgin Media web properties, and how BGP activity may provide insights into the underlying cause...
February 23, 2023 3:58 PM
This blog post reports on Internet insights during an historical war in Europe that has been seen and shared online, and discusses how Ukraine's Internet remained resilient in spite of dozens of disruptions in three different stages of the conflict....
January 25, 2023 3:47 AM
Several Cloudflare services became unavailable for 121 minutes on January 24th, 2023 due to an error releasing code that manages service tokens. The incident degraded a wide range of Cloudflare products...
January 20, 2023 2:00 PM
In this post, we review selected Internet disruptions observed by Cloudflare during the fourth quarter of 2022, supported by traffic graphs from Cloudflare Radar and other internal Cloudflare tools, and grouped by associated cause or common geography....
October 26, 2022 3:02 AM
Today, a change to our Tiered Cache system caused some requests to fail for users with status code 530...
October 18, 2022 5:36 PM
In this post, we review selected Internet disruptions observed by Cloudflare during the second quarter of 2022, supported by traffic graphs from Cloudflare Radar and other internal Cloudflare tools, and grouped by associated cause or common geography...
September 30, 2022 1:00 PM
The new Cloudflare Radar Outage Center (CROC), launched as part of Radar 2.0, is intended to be an archive of information about Internet outages observed by Cloudflare...
July 08, 2022 5:28 PM
An outage at one of the largest ISPs in Canada, Rogers Communications, started earlier today, July 8, 2022, and is ongoing (eight hours and counting), and is impacting businesses and consumers....
July 05, 2022 1:26 PM
In this post, we review selected Internet disruptions observed by Cloudflare during the second quarter of 2022, supported by traffic graphs from Cloudflare Radar and other internal Cloudflare tools, and grouped by associated cause or common geography...
June 21, 2022 12:38 PM
Today, June 21, 2022, Cloudflare suffered an outage that affected traffic in 19 of our data centers...
June 14, 2022 12:55 PM
As they have done over the past several years, Syria and Sudan are implementing multi-hour nationwide Internet shutdowns. Algeria has also taken a similar approach in the past, but this year appears to be implementing more targeted website/app blocking...
June 10, 2022 10:01 AM
On June 7, the Africa-Asia-Europe-1 (AAE-1) and SEA-ME-WE-5 (SMW-5) submarine cables suffered cable cuts, impactingInternet connectivity for millions of Internet users across multiple countries in the Middle East, Africa, and Asia...
April 05, 2022 12:57 PM
This post tells the story of how a missing shell option called “pipefail” slowed Cloudflare down....
