Area Code +1-303-(7473000...7473999) located in Allenspark-Lyons, 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 : 7473000 Subscriber Number To : 7473999 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 : LEVEL 3 COMM - 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 : CO Region Name : Colorado City : Allenspark-Lyons Timezone : America/Denver Coordinated Universal Time : -07:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 40.1900 Longitude : -105.5200 ‹ previous : +1-303-(7472000...7472999) next › : +1-303-(7474000...7474999) Dialling Instructions For trunk calls: 0 303 7473000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 303 7473000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 7473000 ~ 7473999 (Count: 1,000) Example: +1-303-7473000 / 0111-303-7473000 (1303-7473000 / 1-303-7473000) +1-303-7473001 / 0111-303-7473001 (1303-7473001 / 1-303-7473001) +1-303-7473002 / 0111-303-7473002 (1303-7473002 / 1-303-7473002) +1-303-7473003 / 0111-303-7473003 (1303-7473003 / 1-303-7473003) +1-303-7473004 / 0111-303-7473004 (1303-7473004 / 1-303-7473004) ...+1-303-xxxxxxx / 0111-303-xxxxxxx (1303-xxxxxxx / 1-303-xxxxxxx) ...+1-303-7473995 / 0111-303-7473995 (1303-7473995 / 1-303-7473995) +1-303-7473996 / 0111-303-7473996 (1303-7473996 / 1-303-7473996) +1-303-7473997 / 0111-303-7473997 (1303-7473997 / 1-303-7473997) +1-303-7473998 / 0111-303-7473998 (1303-7473998 / 1-303-7473998) +1-303-7473999 / 0111-303-7473999 (1303-7473999 / 1-303-7473999)