AWS Experiencing Issues with DNS Resolution
Incident Report for Scout Security, Inc.
At about 7:30 am CST Amazon Web Services began experiencing issues with DNS resolution across EC2 instances.

The outage was due to a DDOS attack against DYN managed DNS infrastructure. https://www.dynstatus.com/incidents/nlr4yrr162t8

The issue was resolved at 8:20 am CST.
Occurred on October 21