Reachability of one AWS Subnet 3.108.0.0/14

I have been attempting to find someone with AWS that can help with this issue but so far no one within AWS has responded. We are having issues reaching the 3.108.0.0/14 block within the ap-south-1 region. This is the only AWS subnet that we are having issues reaching according to the ES2 reachability page (http://ec2-reachability.amazonaws.com/). Does anyone have a contact at AWS that they can get me in contact with? Thank you, Harley S Ayera Technologies, Inc.