You're going to quickly find that the robocallers (that don't spoof their number) only use numbers for a very short period of time before moving onto another nu

You're going to quickly find that the robocallers (that don't spoof their number) only use numbers for a very short period of time before moving onto another number. Then you'll have legitimate numbers that you've never seen before all of a sudden start blasting out calls such as school delay/cancellation calls and community crime/amber alerts.