This number with "NAME NOT FOUND" showed up on my call blocker this morning, but seems not to be reported here, so I suspect it's a new number in the ever-changing number world that the scumbags are using with their programs that spoof phone numbers.
I'm using the Global Block-feature of my blocker, so this got caught and didn't get through; only numbers that I've defined can get through.
Scam calls that spoof this area's codes (Gilroy/Los Gatos/Morgan Hill) have increased starting already last year.

I  also  received  the     408-168-4597  telephone  number,  today  on  april  28,  2015

i  will  report  and  post  repetitive  numbers,  as  they ------  unfortunately  will  appear.

CID: "Name Unavailable", I've had 3 calls from these idiots in the last day.

408 168 4597, does not show up on caller ID, nor do they leave a message, nor if you answer do they respond. I am on the do not call registry how are these calls continually happening?
Must be some type of scam. Must be a way to stop them.......

Guy called and claimed he was from Best Air Services and wanted to see about doing air duct cleaning for only $40.00 this week. He claims the charge is usually $300 to $500 but if they come out, I would get the discount price. He tried to claim he had cousins who were killed in a New York gas explosion and that this was so important. Claims they have a website which i could check. Says they have offices throughout the state. Suspect this may be some kind of scam so I told him I'm not interested in his services and hung up. The phone number looks fishy so it may be spoofed so I will see about blocking future calls.