I called this number back and it is a home security company. They had an option to be removed from their calling list and you just have to punch in your phone number. It is all automated.

This number called today, March 10, 2008 at 11.10 a.m., left no message on my machine.

Caller hung up when I answered the phone. About 10:40 am March 10, 2008. I.D. unknown.

Caller hung up when I answered, approx. 10:15am Mar. 10, 2008.  I had been
away, so I am wondering if this was someone checking to see if everyone was away, making the place easier to rob.

It was on my caller ID today, March 3, 2008 at 1:04pm. It said toll free number