This number called me twice with no message.  I called them back from my Sprint phone and it said I was not authorized to call this number.  I called it back from my home phone and it doesn't say anything.  A machine answers and doesn't say anything.  It just stays on the line.  

I also got a call to an AT&T phone in October 2014.  Answered and shortly after the call disconnected.

Got a live person with a heavy foreign accent asking for me by name calling about Google listings.  The call supposedly originated from San Francisco.  Hung up and blocked the number.

Same as GT, just got a call from the number on 10/16/2014. They guy had a strong foreign accent, I believe from somewhere in Central Africa. Told me he was calling from a company called (couldn't understand) about something related to Google or Google listings (was really hard to understand). He asked me to confirm my information including name, number and address. Something is really fishy about this call. I have the feeling it was some kind of scam.

I called back. Someone answered, also with foreign accent. The name of the company seems to be "FrontPage" and they are a SEO company trying to "increase your business". I registered a domain lately and I think that's where they got my information from.