Just received this phone call today, I was on the phone so I did not answer but it sure did show this (417) 567-4342 (Fair Grove, MO) . I never answer to numbers not said or show a company name, this obviously isn't legit.
I just got a call from this number. I live very near Fair Grove and have friends who live there. When I answered, I heard a beep. I said "hello" again and heard another beep before it hung up. I'm blocking the number.