Cloudflare is currently suffering an outage this morning that is affecting web sites around the world. This outage is not affecting all regions and only certain domains, including BleepingComputer, so some of you will be able to see this article and others won't until the issue is resolved.

According to Cloudflare, over 16 million Internet sites utilize their services for performance enhancement, DDoS mitigation, or other features. Due to this an outage can have a large impact on the entire Internet.

Cloudflare has opened an incident report for this outage title "Route Leak Impacting Cloudflare".

Cloudflare Incident

A route leak is when another ISP advertises IP address networks that do not belong to them. This causes traffic to go networks it should not normally go through and cause poor performance, routing issues, and outages for affected sites.

Cloudflare's CTO John Graham-Cumming has replied to a YCombinator Hacker News post with more detailed information. In his comment he stated that it looks like a route link with Level3 and that it is only affecting 3% of their global traffic.

Comment by Cloudflare CTO

In Graham-Cumming's latest update, it appears that Amazon AWS is having an network connectivity issue as well. In an update to their status page, Amazon states it is an "External provider connectivity" issue.

External provider connectivity We have confirmed an issue with an external provider outside of our network, which is impacting Internet connectivity between some customer networks and multiple AWS Regions. Connectivity to instances and services from other providers and within the Region is not impacted by the event.

Users have told me that Amazon's outage is causing load time issues on Amazon.com as well, with messages that their browser is having trouble connecting to https://images-na.ssl-images-amazon.com.

Ironically, it is hard to gauge the regions that are affected, as sites that we commonly turn to for outage maps are affected by the Cloudflare outage as well. For example, due to this Cloudflare outage, even downdetector.com is down.

Downdetector.com is down

Update 6/24/19 9:40 AM EST: Both Cloudflare and Amazon are stating their issues are resolved:

Cloudflare Incident Resolved

Amazon Issue Resolved

Update 6/24/19 10:12 AM EST: More information about this incident has been posted to the Nanog mailing list [1, 2]. BGPMon.net also tweeted this summary:

Many of the prefixes we new more specifics, indicating this was likely a BGP optimizer leaking routes which were then leaked to and accepted by Verizon. This caused outages for many networks including Cloudflare and Facebook, Amazon, and many more — BGPmon.net (@bgpmon) June 24, 2019

Cloudflare CEO Matthew Prince also tweeted that this issue was caused by Verizon and Noction, with it not being possible to contact the Verizon NOC during the outage.