I observed connectivity issues to 8.8.8.8 and 1.1.1.1, confirmed by failed ping tests. I decided to inform B and C about these issues and suggest further investigation, as the problems were not isolated to a single destination. Additionally, I configured routes for the prefixes advertised by customer D to ensure their global reachability. These actions were taken to gather more information about the network-wide issue and to maintain service for customer D.