As I previous wrote, the One Ring scammers steal your money by calling you, letting the phone ring once, and hoping you’ll call back. The problem is that the numbers are pay-per-minute numbers. The FTC has updated their information on this scam with the most used area codes. They are: 268,284,473,664,649,767,809,829,849, 876. Calling back one of these numbers could cost you $20 or more.
Bottom line: if you get a call from a number that you don’t know, don’t call back.