Called at 7:00pm on 7/31/08.  Caller ID showed "out of area."   No message left on answering machine.   Number seems to come from Jersey City, NJ.    One report  found of a call from this number selling aviation training CDs.    Best guess is that it is a telemarketer repping for companies who have done business with you in the last 18 months--one of many DNC "exceptions".  Just a guess.