THIS IS VERY IMPORTANT INFORMATION PROVIDED BY AT&T. Calling any of the three area codes could cost you a significant amount!
The way this scam works is that you receive a phone call with information about a family member who has been ill or to tell you someone has-been arrested, died, or to let you know you have won a wonderful prize. You are then instructed to immediately call a number for more information. There may or may not be someone at the end of the line when you call and this is where significant charges can occur.
Additional information on these area codes can be found from ATT