This number called my DNC listed landline today at 1220 hours.  As it was an unfamiliar number and scam artists recently have shown a trend for calling around lunch time, I just picked up the phone slightly and slammed it right back into its receiver.  I blocked my number and called the number back.  I immediately got a message saying the phone number has been disconnected so obviously it's a scam artist spoofing an invalid number.  From my brief research, it appears the number used to belong to a company called Supreme Advertising but that's apparently no longer the case.