The same stinker called me day before yesterday on my DNC land line, and last evening on my unlisted DNC cell phone, the number to which my friends don't even know.  That suggests it might be a robodialer.  and when these guys call my cell, I'm miffed!
March 13, 2017:  Call from 760-338-2016.  Caller ID said, "CALIFORNIA CALL."  No message.
March 14, 2017, 6:14 PM.  Call to my unlisted DNC cell phone from 760-338-2016.  Caller ID said, "CALIFORNIA."