Cloudflare outage on February 20, 2026

What this post added

This post details a significant outage on February 20, 2026, caused by a misconfiguration in the Bring Your Own IP (BYOIP) service. A change intended to automate the removal of prefixes from the BYOIP pipeline contained a bug that led to the unintentional withdrawal of approximately 1,100 customer prefixes from the Cloudflare network. This resulted in services and applications being unreachable for affected customers. The post outlines the impact on various services, the root cause related to the Addressing API and a faulty cleanup sub-task, the limitations of staging environments and testing in catching this specific bug, and the challenges in immediate recovery due to different states of impact. It also highlights the ongoing 'Code Orange: Fail Small' initiative aimed at improving deployment safety and rollback capabilities.