Perhaps a political call. It is the season and many races in VA are closely contested. Since no one knows if this is a sales call, it could be exempt from using the DNC list.
Received two calls about six hours apart from the same number. It's a fake number, as it took awhile for someone to actually respond when I answered (no background noise, a 5 second pause, then the sound of someone picking up the phone). Called identified herself as Irene and hung up when I asked politely for them to please stop calling.
It frustrating when you are on the no call list and continue to get garbage calls. This one called and no conversation, just sat there for a few seconds then hung up. Baiting call? This was from Manassas, VA.