Right on Sir Belvedere: Only scammers and crooks will call "Do not call numbers". If you don't recognise the ID number, then do not answer the call. I am on "Do not call list", but I am also on my own "Do not answer". Good policy to follow....!!!!
Yes, the DNC list is a joke. If the powers that be really wanted to stop this crap, they could. The problem is the companies that are allowed to sell spoofing software. Those kinds of businesses should/could be put out of business. The FCC just doesn't care.