FARGO, N.D. (KVLY) -- Be careful if an unfamiliar area code calls your cell phone. That's a warning from the Federal Trade Commission.
A scam that targets your cell phone is popping back up, and can really dent your wallet.
It's called the "one ring" cell phone scam.
Here is how it works: scammers dial your cell phone and let it ring just once so it appears that you have a missed call. They hope you call back and if you do, expect to get a per-minute charge at an international rate. For one popular carrier it can be $1.99 per minute to one of the identified area codes.
The calls are from phone numbers that look like they're an area code in the U.S. but really it's an international phone number. There are nine area codes that the FTC is warning people to be on the look out for: 268, 284, 473, 664, 649, 767, 809, 829 and 876.
Looking up a few of the numbers on the country calling code identified countries such as Jamaica, Antigua/Barbuda and Dominican Republic.
There is no danger in getting the call; the danger is when you answer or call back.
Many people people say they don't answer calls from unknown numbers.
"If we don't know where it's coming from, we don't answer it," said one Fargo, North Dakota man. "We just let them hang."
"If it's important, they will leave a message," said a Moorhead, North Dakota man.
"I'm not interested in the gimmicks or traps that one can fall into," said one Mayville, North Dakota woman.
The FTC advises people to read their phone bill often and if you don't recognize a charge, contact your carrier. If you fall victim to the scam, contact your carrier. If that doesn't work, file a complaint with the FCC.