Area Code 301-675 located in BALTIMORE, BALTIMORE CITY, MD, more detail is as below. Place NPA (Numbering Plan Area) : 301 NXX (Local Number Prefix) : 675 City : BALTIMORE County : BALTIMORE CITY State : MD (Maryland) NXX Use Type : Wireless NXX Intro Version : 2000-06-13 FIPS (Federal Information Processing Standards) : 24510 LATA (Local Access Transport Area) : 236 Rate Center : WSHNGTNZN3 ZIP Code Count : 1 ZIP Code Frequency : 50 ZIP Code : 21213 Other Information NPANXX : 301675 County Population : 0 Switch CLLI (Common Language Location Identifier) : BTVLMD12CM1 MSA CBSA (Core Based Statistical Area) : Baltimore-Towson, MD MSA CBSA Code (Core Based Statistical Area) : 12580 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC OCN (Operating Company Number) : 6855 Coverage Area Name : SILVER SPRING Latitude : 39.0115 Longitude : -77.0405 ‹ previous : 301-674 next › : 301-675 Telephone Number List 301-675-0000 ~ 301-675-9999