Received call from this number on 4-4-14 at 10:18 AM EST. A female announcer said she was calling on behalf of "Sweepstakes" blah, blah, blah. I don't believe it is legitimate.
This number and sweepstakes is hosted by the government. It's is an information gathering service. No one is actually in the sweepstakes. They ask if you make over 1200 dollars a month if no then you don't qualify if you do then you don't qualify. It's a low level Intel gathering system that if discovered has an operational cover and so blowback upon the Intel agency itself is diminished.