Area Code +1-231-(5200000...5209999) located in Charlevoix, Michigan (MI), more detail is as below. Place International Dialing Code : 1 International Prefix : 011 National Prefix : 1 National Destination Code : 231 Subscriber Number From : 5200000 Subscriber Number To : 5209999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : G (Geographic Land Line, Fixed Line) Carrier Name : 123 NET INC. Click here to buy United States Area Code Database Other Information Language Code : en (English) Country Number : 840 (United States) Country Code : US (United States) Region Code : MI Region Name : Michigan City : Charlevoix Timezone : America/Detroit Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 45.3200 Longitude : -85.2600 ‹ previous : +1-231-(5190000...5199999) next › : +1-231-(5220000...5229999) Dialling Instructions For trunk calls: 0 231 5200000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 231 5200000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 5200000 ~ 5209999 (Count: 10,000) Example: +1-231-5200000 / 0111-231-5200000 (1231-5200000 / 1-231-5200000) +1-231-5200001 / 0111-231-5200001 (1231-5200001 / 1-231-5200001) +1-231-5200002 / 0111-231-5200002 (1231-5200002 / 1-231-5200002) +1-231-5200003 / 0111-231-5200003 (1231-5200003 / 1-231-5200003) +1-231-5200004 / 0111-231-5200004 (1231-5200004 / 1-231-5200004) ...+1-231-xxxxxxx / 0111-231-xxxxxxx (1231-xxxxxxx / 1-231-xxxxxxx) ...+1-231-5209995 / 0111-231-5209995 (1231-5209995 / 1-231-5209995) +1-231-5209996 / 0111-231-5209996 (1231-5209996 / 1-231-5209996) +1-231-5209997 / 0111-231-5209997 (1231-5209997 / 1-231-5209997) +1-231-5209998 / 0111-231-5209998 (1231-5209998 / 1-231-5209998) +1-231-5209999 / 0111-231-5209999 (1231-5209999 / 1-231-5209999)