ASPA: making Internet routing more secure
2026-02-27
ASPA is the cryptographic upgrade for BGP that helps prevent route leaks by verifying the path network traffic takes. New features in Cloudflare Radar make tracking its adoption easy....
Routing
Bringing more transparency to post-quantum usage, encrypted messaging, and routing security
2026-02-27
Cloudflare Radar has added new tools for monitoring PQ adoption, KT logs for messaging, and ASPA routing records to track the Internet's migration toward more secure encryption and routing standards. ...
A closer look at a BGP anomaly in Venezuela
2026-01-06
There has been speculation about the cause of a BGP anomaly observed in Venezuela on January 2. We take a look at BGP route leaks, and dive into what the data suggests caused the anomaly in question....
BGP zombies and excessive path hunting
2025-10-31
A BGP “zombie” is essentially a route that has become stuck in the Default-Free Zone (DFZ) of the Internet, potentially due to a missed or lost prefix withdrawal. We’ll walk through some situations where BGP zombies are more likely to rise from the dead and wreak havoc. ...
Making the Internet observable: the evolution of Cloudflare Radar
2025-10-27
Cloudflare Radar has evolved significantly since its 2020 launch, offering deeper insights into Internet security, routing, and traffic with new tools and data that help anyone understand what's happening online....
How Cloudflare’s systems dynamically route traffic across the globe
2023-09-25
Meet the smartest member of the Cloudflare network team that helps keep you online no matter what happens to the Internet underneath us...
Routing information now on Cloudflare Radar
2023-07-27
The Internet is a vast, sprawling collection of networks that connect to each other. The new Cloudflare Radar Routing page monitors routing changes and anomalies and presents statistics about how we see traffic getting routed on the Internet...
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...
