Received a call no one responded when I answered. I called back and machine said it a solar company. Had the option of opting out, so I did. We'll see how many more times the call.
ID to my phone on 04.28.16 @ 0848 hrs PT, from "Livermore, CA." Web search found caller's phone carrier is: "Mpower Communications Corp - CA" and caller is associated with a solar company. Reported to DNC and blocked on my handset.