Amazon Web Services has confirmed that the issue is now resolved.
Posted Aug 03, 2017 - 00:31 UTC
Amazon Web Services has reported that they have identified the root cause and are beginning to see recovery for instances and EBS volumes in the affected Availability Zone in the US-EAST-1 Region. We continue to work toward full resolution.
Posted Aug 03, 2017 - 00:09 UTC
Amazon Web Services have confirmed that some instances are unreachable and some EBS volumes are experiencing degraded performance in a single Availability Zone in the US-EAST-1 Region. Engineers are engaged and we are working to resolve the issue.
Posted Aug 03, 2017 - 00:06 UTC
Amazon Web Services is currently reporting that they are investigating network connectivity issues for some instances in a single Availability Zone in the US-EAST-1 Region.