just got a call, missed it and called them back from the aller ID information.
"number does not exist" says the telephone company's automated system.
isn't Caller ID spoofing illegal?
I finally was able to actually get a (real) company name for this "spoofed" telephone number. Caller ID shows the fake number and the caller as PrimeAlm; the real company is HSS Home Security Services; they want to place a sign in your front yard in exchange for a "free" alarm system. Their robo-call recording offers an "opt-out by pressing a number" but the opt-out does NOT work!