Area Code 301-266 located in WALDORF, CHARLES, MD, more detail is as below. Place NPA (Numbering Plan Area) : 301 NXX (Local Number Prefix) : 266 City : WALDORF County : CHARLES State : MD (Maryland) NXX Use Type : Wireless NXX Intro Version : 1997-01-11 FIPS (Federal Information Processing Standards) : 24017 LATA (Local Access Transport Area) : 236 Rate Center : WALDORF ZIP Code Count : 0 ZIP Code Frequency : Second most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 20603 Other Information NPANXX : 301266 County Population : 0 Switch CLLI (Common Language Location Identifier) : BTVLMD18GT0 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 Company : NEW CINGULAR WIRELESS PCS, LLC - DC OCN (Operating Company Number) : 4036 Coverage Area Name : WALDORF Latitude : 38.6263 Longitude : -76.9039 ‹ previous : 301-265 next › : 301-266 Telephone Number List 301-266-0000 ~ 301-266-9999