Some TXT about, and A PTR to, new DNS insights on Cloudflare Radar
2025-02-27
The new Cloudflare Radar DNS page provides increased visibility into aggregate traffic and usage trends seen by our 1.1.1.1 resolver...
Continue reading »
How we prevent conflicts in authoritative DNS configuration using formal verification
2024-11-08
We describe how Cloudflare uses a custom Lisp-like programming language and formal verifier (written in Racket and Rosette) to prevent logical contradictions in our authoritative DNS nameserver’s behavior....
Migrating billions of records: moving our active DNS database while it’s in use
2024-10-29
DNS records have moved to a new database, bringing improved performance and reliability to all customers....
Cloudflare partners with Internet Service Providers and network equipment providers to deliver a safer browsing experience to millions of homes
2024-09-24
Cloudflare is extending the use of our public DNS resolver through partnering with ISPs and network providers to deliver a safer browsing experience directly to families. Join us in protecting every Internet user from unsafe content with the click of a button, powered by 1.1.1.1 for Families....
Making zone management more efficient with batch DNS record updates
2024-09-23
In response to customer demand, we now support the ability to DELETE, PATCH, PUT and POST multiple DNS records in a single API call, enabling more efficient and reliable zone management. ...
MORE POSTS
April 12, 2024 1:00 PM
Improving authoritative DNS with the official release of Foundation DNS
We are launching Foundation DNS – our new enterprise-grade authoritative DNS offering. As our new enterprise authoritative DNS offering, Foundation DNS was designed to enhance the reliability, security, flexibility, and analytics of our authoritative DNS service...
- By
March 07, 2024 2:00 PM
Advanced DNS Protection: mitigating sophisticated DNS DDoS attacks
We're proud to introduce the Advanced DNS Protection system, a robust defense mechanism designed to protect against the most sophisticated DNS-based DDoS attacks...
- By
February 29, 2024 2:00 PM
Remediating new DNSSEC resource exhaustion vulnerabilities
Cloudflare recently fixed two critical DNSSEC vulnerabilities: CVE-2023-50387 and CVE-2023-50868. Both of these vulnerabilities can exhaust computational resources of validating DNS resolvers. These vulnerabilities do not affect our Authoritative DNS or DNS firewall products...
- By
January 09, 2024 2:00 PM
DDoS threat report for 2023 Q4
Welcome to the sixteenth edition of Cloudflare’s DDoS Threat Report. This edition covers DDoS trends and key findings for the fourth and final quarter of the year 2023, complete with a review of major trends throughout the year...
- By
December 14, 2023 3:05 PM
Using DNS to estimate the worldwide state of IPv6 adoption
In the last decade, IPv6 adoption on the client side went from under 1% to somewhere in the high 30 to low 40 percent, depending on who’s reporting, but there’s also the other end of the equation: the server side...
- By
December 05, 2023 6:00 AM
Latest copyright decision in Germany rejects blocking through global DNS resolvers
A recent decision from the Higher Regional Court of Cologne in Germany marked important progress for Cloudflare and the Internet in pushing back against misguided attempts to address online copyright infringement through the DNS system...
- By
September 04, 2023 1:00 PM
Connection coalescing with ORIGIN Frames: fewer DNS queries, fewer connections
In this blog we’re going to take a closer look at “connection coalescing”, with specific focus on manage it at a large scale...
- By
July 11, 2023 8:48 AM
Connection errors in Asia Pacific region on July 9, 2023
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...
- By
June 23, 2023 1:00 PM
How we scaled and protected Eurovision 2023 voting with Pages and Turnstile
More than 162 million fans tuned in to the 2023 Eurovision Song Contest, the first year that non-participating countries could also vote. Cloudflare helped scale and protect the voting application based.io, built by once.net using our rapid DNS infrastructure, CDN, Cloudflare Pag...
- By
February 28, 2023 2:00 PM
How Rust and Wasm power Cloudflare's 1.1.1.1
Introducing a new DNS platform that powers 1.1.1.1 and various other products....
- By
December 21, 2022 2:00 PM
One of our most requested features is here: DNS record comments and tags
Today, we’re releasing DNS record comments and tags, making it easier to keep track of and manage DNS records of your domain...
- By
December 15, 2022 2:00 PM
Cloudflare is joining the AS112 project to help the Internet deal with misdirected DNS queries
Cloudflare is participating in the AS112 project, becoming an operator of the loosely coordinated, distributed sink of the reverse lookup (PTR) queries for RFC 1918 addresses, dynamic DNS updates and other ambiguous addresses....
- By
September 30, 2022 1:00 PM
Goodbye, Alexa. Hello, Cloudflare Radar Domain Rankings
Today, we are launching a new dataset called Radar Rankings, where we identify the top most popular domains that reflect how people use the Internet globally and per country....
- By
May 25, 2022 12:59 PM
Dig through SERVFAILs with EDE
Now we’re happy to announce we will return more error code types and include additional helpful information to further improve your debugging experience....
- By
May 25, 2022 12:59 PM
How we improved DNS record build speed by more than 4,000x
How we redesigned our DNS pipeline to significantly improve DNS propagation speed across all zones....
- By