Area Code +1-303-(9999000...9999999) located in Denver, Colorado (CO), more detail is as below. Place International Dialing Code : 1 International Prefix : 011 National Prefix : 1 National Destination Code : 303 Subscriber Number From : 9999000 Subscriber Number To : 9999999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : M (Mobile, Cellular) Carrier Name : T-MOBILE USA 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 : Denver Timezone : America/Denver Coordinated Universal Time : -07:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 39.7400 Longitude : -104.9800 ‹ previous : +1-303-(9998000...9998999) next › : +1-304-(2000000...2000999) Dialling Instructions For trunk calls: 0 303 9999000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 303 9999000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 9999000 ~ 9999999 (Count: 1,000) Example: +1-303-9999000 / 0111-303-9999000 (1303-9999000 / 1-303-9999000) +1-303-9999001 / 0111-303-9999001 (1303-9999001 / 1-303-9999001) +1-303-9999002 / 0111-303-9999002 (1303-9999002 / 1-303-9999002) +1-303-9999003 / 0111-303-9999003 (1303-9999003 / 1-303-9999003) +1-303-9999004 / 0111-303-9999004 (1303-9999004 / 1-303-9999004) ...+1-303-xxxxxxx / 0111-303-xxxxxxx (1303-xxxxxxx / 1-303-xxxxxxx) ...+1-303-9999995 / 0111-303-9999995 (1303-9999995 / 1-303-9999995) +1-303-9999996 / 0111-303-9999996 (1303-9999996 / 1-303-9999996) +1-303-9999997 / 0111-303-9999997 (1303-9999997 / 1-303-9999997) +1-303-9999998 / 0111-303-9999998 (1303-9999998 / 1-303-9999998) +1-303-9999999 / 0111-303-9999999 (1303-9999999 / 1-303-9999999)
