Area Code +1-301-(2123000...2123999) located in Rockville, Maryland (MD), more detail is as below. Place International Dialing Code : 1 International Prefix : 011 National Prefix : 1 National Destination Code : 301 Subscriber Number From : 2123000 Subscriber Number To : 2123999 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 : VERIZON MARYLAND 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 : MD Region Name : Maryland City : Rockville Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 39.0900 Longitude : -77.1600 ‹ previous : +1-301-(2122000...2122999) next › : +1-301-(2124000...2124999) Dialling Instructions For trunk calls: 0 301 2123000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 301 2123000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 2123000 ~ 2123999 (Count: 1,000) Example: +1-301-2123000 / 0111-301-2123000 (1301-2123000 / 1-301-2123000) +1-301-2123001 / 0111-301-2123001 (1301-2123001 / 1-301-2123001) +1-301-2123002 / 0111-301-2123002 (1301-2123002 / 1-301-2123002) +1-301-2123003 / 0111-301-2123003 (1301-2123003 / 1-301-2123003) +1-301-2123004 / 0111-301-2123004 (1301-2123004 / 1-301-2123004) ...+1-301-xxxxxxx / 0111-301-xxxxxxx (1301-xxxxxxx / 1-301-xxxxxxx) ...+1-301-2123995 / 0111-301-2123995 (1301-2123995 / 1-301-2123995) +1-301-2123996 / 0111-301-2123996 (1301-2123996 / 1-301-2123996) +1-301-2123997 / 0111-301-2123997 (1301-2123997 / 1-301-2123997) +1-301-2123998 / 0111-301-2123998 (1301-2123998 / 1-301-2123998) +1-301-2123999 / 0111-301-2123999 (1301-2123999 / 1-301-2123999)
