Shows up as "UKNOWN." Called back because I live in Florida so calls from Orlando area code are common, but no response.

No ID of who. This was from, and the message was a "hello? Hello? No problem, we will call back later".   Did not identify himself or themselves, was a man's voice, sounded Florida, not foreign.

Did not answer.

Someone called without leaving a message.  Obviously a Telemarketer.
Caller ID says, WINTER GDN FL.