Area Code +1-231-(2011000...2011999) located in Chippewa Lake, 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 : 2011000 Subscriber Number To : 2011999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : M (Mobile, Cellular) Carrier Name : NEW CINGULAR WRLS IL 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 : Chippewa Lake Timezone : America/Detroit Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 43.7400 Longitude : -85.3000 ‹ previous : +1-231-(2010000...2010999) next › : +1-231-(2020000...2029999) Dialling Instructions For trunk calls: 0 231 2011000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 231 2011000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2011000 ~ 2011999 (Count: 1,000) Example: +1-231-2011000 / 0111-231-2011000 (1231-2011000 / 1-231-2011000) +1-231-2011001 / 0111-231-2011001 (1231-2011001 / 1-231-2011001) +1-231-2011002 / 0111-231-2011002 (1231-2011002 / 1-231-2011002) +1-231-2011003 / 0111-231-2011003 (1231-2011003 / 1-231-2011003) +1-231-2011004 / 0111-231-2011004 (1231-2011004 / 1-231-2011004) ...+1-231-xxxxxxx / 0111-231-xxxxxxx (1231-xxxxxxx / 1-231-xxxxxxx) ...+1-231-2011995 / 0111-231-2011995 (1231-2011995 / 1-231-2011995) +1-231-2011996 / 0111-231-2011996 (1231-2011996 / 1-231-2011996) +1-231-2011997 / 0111-231-2011997 (1231-2011997 / 1-231-2011997) +1-231-2011998 / 0111-231-2011998 (1231-2011998 / 1-231-2011998) +1-231-2011999 / 0111-231-2011999 (1231-2011999 / 1-231-2011999)