Area Code 240-447 located in MONTGOMERY VILLAGE, MONTGOMERY, MD, more detail is as below. Place NPA (Numbering Plan Area) : 240 NXX (Local Number Prefix) : 447 City : MONTGOMERY VILLAGE County : MONTGOMERY State : MD (Maryland) NXX Use Type : Wireless NXX Intro Version : 1999-02-27 FIPS (Federal Information Processing Standards) : 24031 LATA (Local Access Transport Area) : 236 Rate Center : WSNGTNZN10 ZIP Code Count : 1 ZIP Code Frequency : 33 ZIP Code : 20886 Other Information NPANXX : 240447 County Population : 0 Switch CLLI (Common Language Location Identifier) : WASHDCDTX6X 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 : NEW CINGULAR WIRELESS PCS, LLC - DC OCN (Operating Company Number) : 4036 Coverage Area Name : ROCKVILLE Latitude : 39.0867 Longitude : -77.1600 ‹ previous : 240-447 next › : 240-447 Telephone Number List 240-447-0000 ~ 240-447-9999