Area Code 443-200 located in BALTIMORE, BALTIMORE CITY, MD, more detail is as below. Place NPA (Numbering Plan Area) : 443 NXX (Local Number Prefix) : 200 City : BALTIMORE County : BALTIMORE CITY State : MD (Maryland) NXX Use Type : Landline NXX Intro Version : 1998-05-18 FIPS (Federal Information Processing Standards) : 24510 LATA (Local Access Transport Area) : 238 Rate Center : WOODLAWN ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 21201 Other Information NPANXX : 443200 County Population : 0 Switch CLLI (Common Language Location Identifier) : BLTMMDCDDS0 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 Overlay : L Company : ALLEGIANCE TELECOM, INC. - MD OCN (Operating Company Number) : 8992 Coverage Area Name : BALTIMORE Latitude : 39.2901 Longitude : -76.6166 ‹ previous : 443-200 next › : 443-201 Telephone Number List 443-200-0000 ~ 443-200-9999