Cell phone Number go public this month.
I just did mine and only take less than a minute to register DO NOT CALL .
It's all worth it.
Here is the information:
To prevent this, call the following number from your cell phone or your home
phone:
1-888-382-1222.
It is the National DO NOT CALL list. It will only take a minute of your
time.. It blocks your number for five (5) years. You must call from your
cell phone/or home phone.
Phone number you want to have blocked. You cannot call from a different
phone number. https://www.donotcall.gov/default.aspx