I am getting these "1 Ring" phone calls, one recently from 342-777-5555. I answer but they hang up after one ring. So I looked up the phone number instead of calling back right away. This is what I found out:
“One-ring” cell phone scam can ding your wallet
Here’s how it works: Scammers are using auto-dialers to call cell
phone numbers across the country. Scammers let the phone ring once —
just enough for a missed call message to pop up.
The scammers hope you’ll call back, either because you believe a
legitimate call was cut off, or you will be curious about who called.
If you do, chances are you’ll hear something like, “Hello. You’ve
reached the operator, please hold.” All the while, you’re getting
slammed with some hefty charges — a per-minute charge on top of an
international rate. The calls are from phone numbers with three-digit
area codes that look like they’re from inside the U.S., but actually
are associated with international phone numbers — often in the
Caribbean. The area codes include: 268, 284, 473, 664, 649, 767, 809,
829, 849 and 876. If you get a call like this, don’t pick it up and
don’t call the number back. There’s no danger in getting the call: the
danger is in calling back and racking up a whopping bill.
If you're tempted to call back, do yourself a favor and check the
number through online directories first. They can tell you where the
phone number is registered.