My caller ID said I missed a call from 404-711-8414. When I tried to call them back I got a message that this was not a real number, ie it was a fake number. I bought a "call blocker" device that I saw on Amazon for my phone line - so this is now another phone number that I will block. Over 500 numbers blocked so far. The call blocker is capable of blocking over 9000 numbers.
My Caller ID said I missed a call from 404-744-8414. When I tried to call them back the operator said Your call can not be completed as dialed. Apparently the called uses a fake number when he calls. I will block this number so he can't call me again. I've added a call blocker device to my phone line.