Area Code +1-240-(3387000...3387999) located in Silver Spring, Maryland (MD), more detail is as below. Place International Dialing Code : 1 International Prefix : 011 National Prefix : 1 National Destination Code : 240 Subscriber Number From : 3387000 Subscriber Number To : 3387999 National Destination Code Length : 3 Uses National Destination Code : Yes National Significant Number Length : 10 Number Type : M (Mobile, Cellular) Carrier Name : NEW CINGULAR WRLS DC 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 : Silver Spring Timezone : America/New_York Coordinated Universal Time : -05:00 Daylight Saving Time : Yes National Significant Number Minimum Length : 10 Latitude : 39.0100 Longitude : -77.0400 ‹ previous : +1-240-(3386000...3386999) next › : +1-240-(3388000...3388999) Dialling Instructions For trunk calls: 0 240 3387000 (Trunk Code + National Destination Code + Subscriber Number) For international calls: 011 1 240 3387000 (International Prefix + International Dailing Code +National Destination Code + Subscriber Number) Telephone Number List 3387000 ~ 3387999 (Count: 1,000) Example: +1-240-3387000 / 0111-240-3387000 (1240-3387000 / 1-240-3387000) +1-240-3387001 / 0111-240-3387001 (1240-3387001 / 1-240-3387001) +1-240-3387002 / 0111-240-3387002 (1240-3387002 / 1-240-3387002) +1-240-3387003 / 0111-240-3387003 (1240-3387003 / 1-240-3387003) +1-240-3387004 / 0111-240-3387004 (1240-3387004 / 1-240-3387004) ...+1-240-xxxxxxx / 0111-240-xxxxxxx (1240-xxxxxxx / 1-240-xxxxxxx) ...+1-240-3387995 / 0111-240-3387995 (1240-3387995 / 1-240-3387995) +1-240-3387996 / 0111-240-3387996 (1240-3387996 / 1-240-3387996) +1-240-3387997 / 0111-240-3387997 (1240-3387997 / 1-240-3387997) +1-240-3387998 / 0111-240-3387998 (1240-3387998 / 1-240-3387998) +1-240-3387999 / 0111-240-3387999 (1240-3387999 / 1-240-3387999)