Area Code +1-231-(4880000...4889999) located in Manistee, 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 : 4880000 Subscriber Number To : 4889999 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 : Manistee Timezone : America/Detroit Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 44.2500 Longitude : -86.3300 ‹ previous : +1-231-(4879000...4879999) next › : +1-231-(4920000...4920999) Dialling Instructions For trunk calls: 0 231 4880000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 231 4880000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 4880000 ~ 4889999 (Count: 10,000) Example: +1-231-4880000 / 0111-231-4880000 (1231-4880000 / 1-231-4880000) +1-231-4880001 / 0111-231-4880001 (1231-4880001 / 1-231-4880001) +1-231-4880002 / 0111-231-4880002 (1231-4880002 / 1-231-4880002) +1-231-4880003 / 0111-231-4880003 (1231-4880003 / 1-231-4880003) +1-231-4880004 / 0111-231-4880004 (1231-4880004 / 1-231-4880004) ...+1-231-xxxxxxx / 0111-231-xxxxxxx (1231-xxxxxxx / 1-231-xxxxxxx) ...+1-231-4889995 / 0111-231-4889995 (1231-4889995 / 1-231-4889995) +1-231-4889996 / 0111-231-4889996 (1231-4889996 / 1-231-4889996) +1-231-4889997 / 0111-231-4889997 (1231-4889997 / 1-231-4889997) +1-231-4889998 / 0111-231-4889998 (1231-4889998 / 1-231-4889998) +1-231-4889999 / 0111-231-4889999 (1231-4889999 / 1-231-4889999)