It is possible to block entire blocks of number and shunt these spammers and spoofers to cell-phone hell.
Thanks for the suggestion. I will check it out. It may help me with a problem I have been having for several months. I believe my cell number is being "spoofed."
From time to time I get a flurry of calls from real estate brokers (I'm one myself) saying they missed my call when I have not called them.
In every case, my office number (which fowards to my cell phone) appears as a missed call on the person's cell phone. They all say the never heard the phone ring; they just see my office number as a missed call.
I'm really tired of explaining it to people. Some are so dense they don't hear what I'm saying and still ask, "Okay, why did you call me?"
On YouMail, you may have to teach the app that a number is a spammer. Block on the phone device and let the Youmail pick-up the call. One of the choices is to select the Youmail tone that conveys the tonal-message that your number is disconnected. Perhaps, I did not word the preceding sentence artfully, but the notion is the robocaller gets sent to spammer hell.
You can also use the wildcard “?” to divert/block large groups of numbers when the spammer has a chunk of numbers that are incremented for the multiple attempts (i.e., 805-918-????) will block all 10,000 numbers from 0000 to 9999.
For the cynical reader, I do use the service but have no other interest beyond sharing my experience with an app that works.