Received a call from 727-448-0809 on 08/18/2014 at 9:14 AM, caller name ID read as "Florida."  I picked up the receiver but I did not speak, there was dead silence on the other end until the call disconnected.

Just got a phone call from this number...the caller id said it was from Florida...a recorded intro says "sorry I have dialed a wrong number" and hangs up.

I work in the data business. I'm pretty sure the call came from a phone number verification service. In other words, company "x" gives them a list of numbers, they have a robot call all numbers listening for the "out of service" message. If they don't get it, the number is good. The list of numbers is returned to company "x" with the bad numbers removed. The cost for the service is about 6 cents per dial. Company "x" tells its telemarketers that "all the numbers are good". There you go.

Two calls from this number back to back within the space of two minutes.... they hang up before I can answer after the first ring.

This number has called but leaves no message.