Area Code +1-309-(4840000...4849999) located in Altona, Illinois (IL), more detail is as below. Place International Dialing Code : 1 International Prefix : 011 National Prefix : 1 National Destination Code : 309 Subscriber Number From : 4840000 Subscriber Number To : 4849999 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 : MID CNTY TEL COOP 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 : Altona Timezone : America/Chicago Coordinated Universal Time : -06:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 41.1100 Longitude : -90.1600 ‹ previous : +1-309-(4830000...4839999) next › : +1-309-(4850000...4850999) Dialling Instructions For trunk calls: 0 309 4840000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 309 4840000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 4840000 ~ 4849999 (Count: 10,000) Example: +1-309-4840000 / 0111-309-4840000 (1309-4840000 / 1-309-4840000) +1-309-4840001 / 0111-309-4840001 (1309-4840001 / 1-309-4840001) +1-309-4840002 / 0111-309-4840002 (1309-4840002 / 1-309-4840002) +1-309-4840003 / 0111-309-4840003 (1309-4840003 / 1-309-4840003) +1-309-4840004 / 0111-309-4840004 (1309-4840004 / 1-309-4840004) ...+1-309-xxxxxxx / 0111-309-xxxxxxx (1309-xxxxxxx / 1-309-xxxxxxx) ...+1-309-4849995 / 0111-309-4849995 (1309-4849995 / 1-309-4849995) +1-309-4849996 / 0111-309-4849996 (1309-4849996 / 1-309-4849996) +1-309-4849997 / 0111-309-4849997 (1309-4849997 / 1-309-4849997) +1-309-4849998 / 0111-309-4849998 (1309-4849998 / 1-309-4849998) +1-309-4849999 / 0111-309-4849999 (1309-4849999 / 1-309-4849999)