Call said "Marianna, FL" on the caller ID. Left no message. I also have a 573 prefix on my phone. I keep getting 573 calls and when I answer, it is always a national telemarketer. I researched this and it said that they are using something called SPOOFING where they can somehow get a number with the same prefix to show on your caller ID. That makes you more likely to answer the phone. I NEVER answer calls with my prefix any more as a result.