Called several times over a period of week and did not leave a message.  I finally answered, it turned out to be one of these companies asking for a donation to some organization.  I never donate via this method because usually only around 15 percent of the donation actually gets to the organization itself.  And there is no way for me to find out if it is legit.

Caller  ID says "Denver Colorado".

Got a call from this number at 5:22pm MST today, first time as far as I can tell from the logs. This call showed up in the logs as V2161922110005176822 which I believe is indicative of a spoofed number.

Called today, no message left. My caller id says "mincoming call" probably trying to get someone seeing only incoming call.

Got a call today from this number. Caller ID said MINCOMING CALL. When I answered, I heard "Hello, this is Ken Dougherty." It sounded like a recording, so I didn't say anything. Then I heard, "Are you still there?" It still sounded like a recording, so I still didn't say anything. Then the call hung up.