Keep getting D/C symbol

[Raist]

That 2nd hop should be your gateway on their network. There should be a simple way to identify it. You should at least get the route list from pathping. At least I would in the past. Even though I would have starred events along the way, I could always get the list of IP addresses for the route so we had a road map and knew were to look for problems.

Perhaps there is something stronger clamping down access to that gateway (firewall or ACL)? Who knows... but without being able to test against it, you are in a bad pickle because you can't confirm that things are indeed good on their side of the equation. You can have signs of potential trouble show up down the route that are actually from something in your first 5 hops.