I get calls from this number all the time, can you say chuckching!? The Telephone Consumer Protection Act (TCPA) makes clear about nuisance calls from any person or business within the United States to make such calls to a persons cell phone without a prior business relationship and or prior consent, $500 for the first call and $1500 each call after that. These violations can be stacked and the statute of limitations for the TCPA is 4 years.
Received a call from this number advising he was "David Thompson" (heavy Indian accent) from the US Federal Grant Program. Provided number ILG610 (Independent Living Grant) stating it was worth in excess of $4,000 - free from government due to clean credit record - verified zip code and age and asked me to call 818-850-7743 and speak to accounts officer to arrange how to receive money. No, I didn't call.