Area Code 240-670 located in BRENTWOOD, PRINCE GEORGES, MD, more detail is as below. Place NPA (Numbering Plan Area) : 240 NXX (Local Number Prefix) : 670 City : BRENTWOOD County : PRINCE GEORGES State : MD (Maryland) NXX Use Type : Landline NXX Intro Version : 3/6/2012 FIPS (Federal Information Processing Standards) : 24033 LATA (Local Access Transport Area) : 236 Rate Center : WSHNGTNZN3 ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 20722 Other Information NPANXX : 240670 County Population : 0 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 : RNK, INC. OCN (Operating Company Number) : 8700 Coverage Area Name : MOUNT RAINIER Latitude : 38.9137 Longitude : -77.0345 ‹ previous : 240-669 next › : 240-671 Telephone Number List 240-670-0000 ~ 240-670-9999