Amazon Route 53[RESOLVED]
5:44 PM PDT On October 22, 2019, we detected and then mitigated a DDoS (Distributed Denial of Service) attack against Route 53. Due to the way that DNS queries are processed, this attack was first experienced by many other DNS server operators as the queries made their way through DNS resolvers on the internet to Route 53. The attack targeted specific DNS names and paths, notably those used to access the global names for S3 buckets. Because this attack was widely distributed, a small number of ISPs operating affected DNS resolvers implemented mitigation strategies of their own in an attempt to control the traffic. This is causing DNS lookups through these resolvers for a small number of AWS names to fail. We are doing our best to identify and contact these operators, as quickly as possible, and working with them to enhance their mitigations so that they do not cause impact to valid requests. If you are experiencing issues, please contact us so we can work with your operator to help resolve.
https://status.aws.amazon.com#route53