Almost certainly a telemarketer.

I received a call at 10:49am on my AT&T (formerly Cingular) cell phone.  
The lady ("Jamie") explained that I did not win the Grand Prize Jeep Cherokee but did win a cruise for two to Cozumel Mexico.

It seems to be a new number for this logged one,
http://800notes.com/Phone.aspx/1-206-241-5963

FWIW, I have a San Antonio number.  Apparently, they are still working Texas cell phones.

That must be what I just got on my cell from tn 1-206-241-5959. I think they cycle through however many states they call because this particular scam has been going on for years down here at least. And it's not just cell phones.

I've gotten them off and on since I moved to San Antonio over 10 years ago.

Just received a call telling me I could take a free trip to San Francisco or Las Vegas.  The message was actually cut off partway through.

I'm in Amherst MA, so they seem to be spreading out.

Telemarketer pushing "free vacation".