We have had the 216 area code blocked for about 1 year.
The call came in as a "private call" which is automatically blocked by our Di*it**e call blocker.
Not sure whether they were blocked because we have the 216 area code blocked or because it was a "private call."
Either way - their call was blocked and our phones did not ring AND OUR OFFICE WAS NOT DISTURBED BY THEIR CALL!
We now have over 200 area codes blocked.
Should you have family, friends or business in a blocked area code, simply "invite" their telephone number and they can ring right through - problem solved!