Area Code 410-843 located in BALTIMORE, BALTIMORE CITY, MD, more detail is as below. Place NPA (Numbering Plan Area) : 410 NXX (Local Number Prefix) : 843 City : BALTIMORE County : BALTIMORE CITY State : MD (Maryland) NXX Use Type : Landline NXX Intro Version : 1996-04-15 FIPS (Federal Information Processing Standards) : 24510 LATA (Local Access Transport Area) : 238 Rate Center : BALTIMORE ZIP Code Count : 71 ZIP Code Frequency : 78 ZIP Code : 21201 Other Information NPANXX : 410843 Switch CLLI (Common Language Location Identifier) : BLTMMDFMDS0 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 : TELEPORT COMMUNICATIONS AMERICA, LLC - MD OCN (Operating Company Number) : 7325 Coverage Area Name : BALTIMORE Latitude : 39.2938 Longitude : -76.6132 ‹ previous : 410-843 next › : 410-844 Telephone Number List 410-843-0000 ~ 410-843-9999