Area Code +1-231-(3690000...3699999) located in South Boardman, 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 : 3690000 Subscriber Number To : 3699999 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 : ACE TEL CO OF MI 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 : South Boardman Timezone : America/Detroit Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 44.6400 Longitude : -85.2800 ‹ previous : +1-231-(3680000...3689999) next › : +1-231-(3720000...3729999) Dialling Instructions For trunk calls: 0 231 3690000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 231 3690000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3690000 ~ 3699999 (Count: 10,000) Example: +1-231-3690000 / 0111-231-3690000 (1231-3690000 / 1-231-3690000) +1-231-3690001 / 0111-231-3690001 (1231-3690001 / 1-231-3690001) +1-231-3690002 / 0111-231-3690002 (1231-3690002 / 1-231-3690002) +1-231-3690003 / 0111-231-3690003 (1231-3690003 / 1-231-3690003) +1-231-3690004 / 0111-231-3690004 (1231-3690004 / 1-231-3690004) ...+1-231-xxxxxxx / 0111-231-xxxxxxx (1231-xxxxxxx / 1-231-xxxxxxx) ...+1-231-3699995 / 0111-231-3699995 (1231-3699995 / 1-231-3699995) +1-231-3699996 / 0111-231-3699996 (1231-3699996 / 1-231-3699996) +1-231-3699997 / 0111-231-3699997 (1231-3699997 / 1-231-3699997) +1-231-3699998 / 0111-231-3699998 (1231-3699998 / 1-231-3699998) +1-231-3699999 / 0111-231-3699999 (1231-3699999 / 1-231-3699999)