Area Code 240-777 located in DERWOOD, MONTGOMERY, MD, more detail is as below. Place NPA (Numbering Plan Area) : 240 NXX (Local Number Prefix) : 777 City : DERWOOD County : MONTGOMERY State : MD (Maryland) NXX Use Type : Landline NXX Intro Version : 1999-05-10 FIPS (Federal Information Processing Standards) : 24031 LATA (Local Access Transport Area) : 236 Rate Center : WSNGTNZN10 ZIP Code Count : 3 ZIP Code Frequency : 4 ZIP Code : 20855 Other Information NPANXX : 240777 County Population : 0 Switch CLLI (Common Language Location Identifier) : RKVLMDRVDS1 MSA CBSA (Core Based Statistical Area) : Washington-Arlington-Alexandria, DC-VA-MD-WV MSA CBSA Code (Core Based Statistical Area) : 47900 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Overlay : L Company : VERIZON MARYLAND, INC. OCN (Operating Company Number) : 9212 Coverage Area Name : ROCKVILLE Latitude : 39.0815 Longitude : -77.1503 ‹ previous : 240-777 next › : 240-777 Telephone Number List 240-777-0000 ~ 240-777-9999
