Area Code +1-309-(6530000...6539999) located in Adair, 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 : 6530000 Subscriber Number To : 6539999 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 : MCDONOUGH TEL COOP I 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 : Adair Timezone : America/Chicago Coordinated Universal Time : -06:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 40.4200 Longitude : -90.5000 ‹ previous : +1-309-(6520000...6529999) next › : +1-309-(6540000...6549999) Dialling Instructions For trunk calls: 0 309 6530000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 309 6530000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 6530000 ~ 6539999 (Count: 10,000) Example: +1-309-6530000 / 0111-309-6530000 (1309-6530000 / 1-309-6530000) +1-309-6530001 / 0111-309-6530001 (1309-6530001 / 1-309-6530001) +1-309-6530002 / 0111-309-6530002 (1309-6530002 / 1-309-6530002) +1-309-6530003 / 0111-309-6530003 (1309-6530003 / 1-309-6530003) +1-309-6530004 / 0111-309-6530004 (1309-6530004 / 1-309-6530004) ...+1-309-xxxxxxx / 0111-309-xxxxxxx (1309-xxxxxxx / 1-309-xxxxxxx) ...+1-309-6539995 / 0111-309-6539995 (1309-6539995 / 1-309-6539995) +1-309-6539996 / 0111-309-6539996 (1309-6539996 / 1-309-6539996) +1-309-6539997 / 0111-309-6539997 (1309-6539997 / 1-309-6539997) +1-309-6539998 / 0111-309-6539998 (1309-6539998 / 1-309-6539998) +1-309-6539999 / 0111-309-6539999 (1309-6539999 / 1-309-6539999)