Area Code +1-312-(2023000...2023999) located in Chicago, Illinois (IL), more detail is as below. Place International Dialing Code : 1 International Prefix : 011 National Prefix : 1 National Destination Code : 312 Subscriber Number From : 2023000 Subscriber Number To : 2023999 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 : ACCESS ONE INC 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 : IL Region Name : Illinois City : Chicago Timezone : America/Chicago Coordinated Universal Time : -06:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 41.8800 Longitude : -87.6400 ‹ previous : +1-312-(2022000...2022999) next › : +1-312-(2024000...2024999) Dialling Instructions For trunk calls: 0 312 2023000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 312 2023000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2023000 ~ 2023999 (Count: 1,000) Example: +1-312-2023000 / 0111-312-2023000 (1312-2023000 / 1-312-2023000) +1-312-2023001 / 0111-312-2023001 (1312-2023001 / 1-312-2023001) +1-312-2023002 / 0111-312-2023002 (1312-2023002 / 1-312-2023002) +1-312-2023003 / 0111-312-2023003 (1312-2023003 / 1-312-2023003) +1-312-2023004 / 0111-312-2023004 (1312-2023004 / 1-312-2023004) ...+1-312-xxxxxxx / 0111-312-xxxxxxx (1312-xxxxxxx / 1-312-xxxxxxx) ...+1-312-2023995 / 0111-312-2023995 (1312-2023995 / 1-312-2023995) +1-312-2023996 / 0111-312-2023996 (1312-2023996 / 1-312-2023996) +1-312-2023997 / 0111-312-2023997 (1312-2023997 / 1-312-2023997) +1-312-2023998 / 0111-312-2023998 (1312-2023998 / 1-312-2023998) +1-312-2023999 / 0111-312-2023999 (1312-2023999 / 1-312-2023999)
