Making progress on routing security: the new White House roadmap
2024-09-02
On September 3, 2024, the White House published a report on Internet routing security. We’ll talk about what that means and how you can help....
Why BGP communities are better than AS-path prepends
2022-11-24
Routing on the Internet follows a few basic principles. Unfortunately not everything on the Internet is created equal, and prepending can do more harm than good. In this blog post we’ll talk about the problems that prepending aims to solve, and some alternative solutions...
Cloudflare’s view of the Rogers Communications outage in Canada
2022-07-08
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....
Cloudflare outage on June 21, 2022
2022-06-21
Today, June 21, 2022, Cloudflare suffered an outage that affected traffic in 19 of our data centers...
Understanding how Facebook disappeared from the Internet
2021-10-04
Today at 1651 UTC, we opened an internal incident entitled "Facebook DNS lookup returning SERVFAIL" because we were worried that something was wrong with our DNS resolver 1.1.1.1. But as we were about to post on our public status page we realized something else more serious was going on....
ASICs at the Edge
2020-11-27
At Cloudflare, we pride ourselves in our global network that spans more than 200 cities in over 100 countries. To accelerate all that traffic through our network, there are multiple technologies at play. So let’s have a look at one of the cornerstones that makes all of this work....
How Verizon and a BGP Optimizer Knocked Large Parts of the Internet Offline Today
2019-06-24
Today at 10:30UTC, the Internet had a small heart attack. A small company in Northern Pennsylvania became a preferred path of many Internet routes through Verizon (AS701), a major Internet transit provider. ...