Area Code +1-779-(2004000...2004999) located in Rockford, Illinois (IL), more detail is as below. Place International Dialing Code : 1 International Prefix : 011 National Prefix : 1 National Destination Code : 779 Subscriber Number From : 2004000 Subscriber Number To : 2004999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : M (Mobile, Cellular) Carrier Name : VERIZON WIRELESS-IL 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 : IL Region Name : Illinois City : Rockford Timezone : America/Chicago Coordinated Universal Time : -06:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 42.2700 Longitude : -89.1000 ‹ previous : +1-779-(2003000...2003999) next › : +1-779-(2005000...2005999) Dialling Instructions For trunk calls: 0 779 2004000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 779 2004000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2004000 ~ 2004999 (Count: 1,000) Example: +1-779-2004000 / 0111-779-2004000 (1779-2004000 / 1-779-2004000) +1-779-2004001 / 0111-779-2004001 (1779-2004001 / 1-779-2004001) +1-779-2004002 / 0111-779-2004002 (1779-2004002 / 1-779-2004002) +1-779-2004003 / 0111-779-2004003 (1779-2004003 / 1-779-2004003) +1-779-2004004 / 0111-779-2004004 (1779-2004004 / 1-779-2004004) ...+1-779-xxxxxxx / 0111-779-xxxxxxx (1779-xxxxxxx / 1-779-xxxxxxx) ...+1-779-2004995 / 0111-779-2004995 (1779-2004995 / 1-779-2004995) +1-779-2004996 / 0111-779-2004996 (1779-2004996 / 1-779-2004996) +1-779-2004997 / 0111-779-2004997 (1779-2004997 / 1-779-2004997) +1-779-2004998 / 0111-779-2004998 (1779-2004998 / 1-779-2004998) +1-779-2004999 / 0111-779-2004999 (1779-2004999 / 1-779-2004999)