Area Code +1-231-(8860000...8860999) located in Kalkaska, 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 : 8860000 Subscriber Number To : 8860999 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 : Kalkaska Timezone : America/Detroit Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 44.7300 Longitude : -85.1800 ‹ previous : +1-231-(8850000...8859999) next › : +1-231-(8861000...8861999) Dialling Instructions For trunk calls: 0 231 8860000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 231 8860000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 8860000 ~ 8860999 (Count: 1,000) Example: +1-231-8860000 / 0111-231-8860000 (1231-8860000 / 1-231-8860000) +1-231-8860001 / 0111-231-8860001 (1231-8860001 / 1-231-8860001) +1-231-8860002 / 0111-231-8860002 (1231-8860002 / 1-231-8860002) +1-231-8860003 / 0111-231-8860003 (1231-8860003 / 1-231-8860003) +1-231-8860004 / 0111-231-8860004 (1231-8860004 / 1-231-8860004) ...+1-231-xxxxxxx / 0111-231-xxxxxxx (1231-xxxxxxx / 1-231-xxxxxxx) ...+1-231-8860995 / 0111-231-8860995 (1231-8860995 / 1-231-8860995) +1-231-8860996 / 0111-231-8860996 (1231-8860996 / 1-231-8860996) +1-231-8860997 / 0111-231-8860997 (1231-8860997 / 1-231-8860997) +1-231-8860998 / 0111-231-8860998 (1231-8860998 / 1-231-8860998) +1-231-8860999 / 0111-231-8860999 (1231-8860999 / 1-231-8860999)