Area Code +1-231-(2060000...2069999) located in Muskegon, 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 : 2060000 Subscriber Number To : 2069999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : M (Mobile, Cellular) Carrier Name : SPRINT SPECTRUM LP 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 : Muskegon Timezone : America/Detroit Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 43.2400 Longitude : -86.2400 ‹ previous : +1-231-(2050000...2059999) next › : +1-231-(2070000...2079999) Dialling Instructions For trunk calls: 0 231 2060000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 231 2060000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2060000 ~ 2069999 (Count: 10,000) Example: +1-231-2060000 / 0111-231-2060000 (1231-2060000 / 1-231-2060000) +1-231-2060001 / 0111-231-2060001 (1231-2060001 / 1-231-2060001) +1-231-2060002 / 0111-231-2060002 (1231-2060002 / 1-231-2060002) +1-231-2060003 / 0111-231-2060003 (1231-2060003 / 1-231-2060003) +1-231-2060004 / 0111-231-2060004 (1231-2060004 / 1-231-2060004) ...+1-231-xxxxxxx / 0111-231-xxxxxxx (1231-xxxxxxx / 1-231-xxxxxxx) ...+1-231-2069995 / 0111-231-2069995 (1231-2069995 / 1-231-2069995) +1-231-2069996 / 0111-231-2069996 (1231-2069996 / 1-231-2069996) +1-231-2069997 / 0111-231-2069997 (1231-2069997 / 1-231-2069997) +1-231-2069998 / 0111-231-2069998 (1231-2069998 / 1-231-2069998) +1-231-2069999 / 0111-231-2069999 (1231-2069999 / 1-231-2069999)