Called.  Didn't leave message.  Says "CALIFORNIA" on Caller ID.

Called.  Didn't reply when hailed. Didn't leave message. Didn't call back.

Called number back received voicemail for Jason Whatley

This guy works for a computer security company.  I couldn't make out the name even after listening a few times to the voice mail he left.  Anyway, if you're not involved in securing data processing systems you should not be getting calls from this number.  And, even if you are, you probably still should have asked to be called first.  Heh.