Area Code +1-720-(2020000...2020999) located in Denver, Colorado (CO), more detail is as below. Place International Dialing Code : 1 International Prefix : 011 National Prefix : 1 National Destination Code : 720 Subscriber Number From : 2020000 Subscriber Number To : 2020999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : M (Mobile, Cellular) Carrier Name : VERIZON WIRELESS-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 : 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 : +1-720-(2010000...2019999) next › : +1-720-(2021000...2021999) Dialling Instructions For trunk calls: 0 720 2020000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 720 2020000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2020000 ~ 2020999 (Count: 1,000) Example: +1-720-2020000 / 0111-720-2020000 (1720-2020000 / 1-720-2020000) +1-720-2020001 / 0111-720-2020001 (1720-2020001 / 1-720-2020001) +1-720-2020002 / 0111-720-2020002 (1720-2020002 / 1-720-2020002) +1-720-2020003 / 0111-720-2020003 (1720-2020003 / 1-720-2020003) +1-720-2020004 / 0111-720-2020004 (1720-2020004 / 1-720-2020004) ...+1-720-xxxxxxx / 0111-720-xxxxxxx (1720-xxxxxxx / 1-720-xxxxxxx) ...+1-720-2020995 / 0111-720-2020995 (1720-2020995 / 1-720-2020995) +1-720-2020996 / 0111-720-2020996 (1720-2020996 / 1-720-2020996) +1-720-2020997 / 0111-720-2020997 (1720-2020997 / 1-720-2020997) +1-720-2020998 / 0111-720-2020998 (1720-2020998 / 1-720-2020998) +1-720-2020999 / 0111-720-2020999 (1720-2020999 / 1-720-2020999)