Finished with a Verizon DSL technician around 11:00 AM today and he confirmed that Verizon's Arlington, Virginia office has been aware of a DSL routing problem since approximately 6:00 AM on 2015-10-06 that affects Verizon customers as far West as Potomac Falls.
1. can ping verizon.net
2. cannot ping verizon.com
Hopefully, the issue will be cleared up soon.
Just wanted to let everyone know what is going on.