Who called from 8015756464

Received a phone call from this number on 2/14/2012 at 9:23am on my work line. I picked up, but there was no one on the other line. When I called the number back a minute later, the line was disconnected? Wow, that was quick...

I let my answer machine take the call but no one left message so I do not bother. Just wanted to check the number to see if it was a resident.