Area Code +1-970-(3990000...3990999) located in Delta, Colorado (CO), more detail is as below. Place International Dialing Code : 1 International Prefix : 011 National Prefix : 1 National Destination Code : 970 Subscriber Number From : 3990000 Subscriber Number To : 3990999 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 : ZIPPYTECH 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 : CO Region Name : Colorado City : Delta Timezone : America/Denver Coordinated Universal Time : -07:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 38.7400 Longitude : -108.0700 ‹ previous : +1-970-(3989000...3989999) next › : +1-970-(3991000...3991999) Dialling Instructions For trunk calls: 0 970 3990000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 970 3990000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3990000 ~ 3990999 (Count: 1,000) Example: +1-970-3990000 / 0111-970-3990000 (1970-3990000 / 1-970-3990000) +1-970-3990001 / 0111-970-3990001 (1970-3990001 / 1-970-3990001) +1-970-3990002 / 0111-970-3990002 (1970-3990002 / 1-970-3990002) +1-970-3990003 / 0111-970-3990003 (1970-3990003 / 1-970-3990003) +1-970-3990004 / 0111-970-3990004 (1970-3990004 / 1-970-3990004) ...+1-970-xxxxxxx / 0111-970-xxxxxxx (1970-xxxxxxx / 1-970-xxxxxxx) ...+1-970-3990995 / 0111-970-3990995 (1970-3990995 / 1-970-3990995) +1-970-3990996 / 0111-970-3990996 (1970-3990996 / 1-970-3990996) +1-970-3990997 / 0111-970-3990997 (1970-3990997 / 1-970-3990997) +1-970-3990998 / 0111-970-3990998 (1970-3990998 / 1-970-3990998) +1-970-3990999 / 0111-970-3990999 (1970-3990999 / 1-970-3990999)