Cloudflare Network and Resolver Issues

Incident Report for Cloudflare

Postmortem

We appreciate everyone’s patience during this incident and we apologize for any disruption that may have occurred.

A public root cause analysis can be found in our blog at https://blog.cloudflare.com/cloudflare-outage-on-july-17-2020/

Posted Jul 20, 2020 - 16:07 UTC

Resolved

This incident has been resolved.

Posted Jul 17, 2020 - 22:57 UTC

Monitoring

A fix has been implemented and we are monitoring the results.

Posted Jul 17, 2020 - 22:34 UTC

Update

This afternoon we saw an outage across some parts of our network. It was not as a result of an attack. It appears a router on our global backbone announced bad routes and caused some portions of the network to not be available. We believe we have addressed the root cause and are monitoring systems for stability now.

Posted Jul 17, 2020 - 22:09 UTC

Identified

The issue has been identified and a fix is being implemented.

Posted Jul 17, 2020 - 21:46 UTC

Investigating

Cloudflare is investigating issues with Cloudflare Resolver and our edge network in certain locations.

Customers using Cloudflare services in certain regions are impacted as requests might fail and/or errors may be displayed.

Data Centers impacted include: SJC, DFW, SEA, LAX, ORD, IAD, EWR, ATL, LHR, AMS, FRA, CDG

Posted Jul 17, 2020 - 21:37 UTC

This incident affected: Cloudflare Sites and Services (API, Recursive DNS).