My number was registered with the DNC on Day 1.  It works, but YOU have to make it work for you.  I use various approaches to handle these Federal Law violators.  I work from home and play my music as loud as I please.  When this MOFO called a few minutes ago, I answered loudly, then waited, then told them that THEY would have to turn down THEIR music if they wanted to talk to me.  CLICK