Area Code +1-580-(6370000...6379999) located in Alfalfa, Oklahoma (OK), more detail is as below. Place International Dialing Code : 1 International Prefix : 011 National Prefix : 1 National Destination Code : 580 Subscriber Number From : 6370000 Subscriber Number To : 6379999 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 : CARNEGIE TEL CO 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 : OK Region Name : Oklahoma City : Alfalfa Timezone : America/Chicago Coordinated Universal Time : -06:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 35.2200 Longitude : -98.6100 ‹ previous : +1-580-(6360000...6369999) next › : +1-580-(6380000...6389999) Dialling Instructions For trunk calls: 0 580 6370000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 580 6370000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 6370000 ~ 6379999 (Count: 10,000) Example: +1-580-6370000 / 0111-580-6370000 (1580-6370000 / 1-580-6370000) +1-580-6370001 / 0111-580-6370001 (1580-6370001 / 1-580-6370001) +1-580-6370002 / 0111-580-6370002 (1580-6370002 / 1-580-6370002) +1-580-6370003 / 0111-580-6370003 (1580-6370003 / 1-580-6370003) +1-580-6370004 / 0111-580-6370004 (1580-6370004 / 1-580-6370004) ...+1-580-xxxxxxx / 0111-580-xxxxxxx (1580-xxxxxxx / 1-580-xxxxxxx) ...+1-580-6379995 / 0111-580-6379995 (1580-6379995 / 1-580-6379995) +1-580-6379996 / 0111-580-6379996 (1580-6379996 / 1-580-6379996) +1-580-6379997 / 0111-580-6379997 (1580-6379997 / 1-580-6379997) +1-580-6379998 / 0111-580-6379998 (1580-6379998 / 1-580-6379998) +1-580-6379999 / 0111-580-6379999 (1580-6379999 / 1-580-6379999)