Received a call from "Triangle" and let it go to voicemail.  Didn't leave a message.  Will add both the name and phone number to my computerized call blocker.  Since I don't know anyone in the AC703 area I will block that entire AC.  (Yes, I have a computer that is just for blocking phone calls.  Why a dedicated system?  Most commercial phone blockers have a limit on the number of entries, a computer does not. I can block entire area codes, or area code and prefix, and by name or lack of name.  More versatile than a phone blocker device.)