Area Code 410-378 located in PERRYVILLE, CECIL, MD, more detail is as below. Place NPA (Numbering Plan Area) : 410 NXX (Local Number Prefix) : 378 City : PERRYVILLE County : CECIL State : MD (Maryland) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 24015 LATA (Local Access Transport Area) : 238 Rate Center : PT DEPOSIT ZIP Code Count : 227 ZIP Code Frequency : 8 ZIP Code : 21903 Other Information NPANXX : 410378 Switch CLLI (Common Language Location Identifier) : BNBRMDBRRS0 MSA CBSA (Core Based Statistical Area) : Philadelphia-Camden-Wilmington, PA-NJ-DE-MD MSA CBSA Code (Core Based Statistical Area) : 37980 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : VERIZON MARYLAND, INC. OCN (Operating Company Number) : 9212 Coverage Area Name : PORT DEPOSIT Latitude : 39.5984 Longitude : -76.0850 ‹ previous : 410-378 next › : 410-378 Telephone Number List 410-378-0000 ~ 410-378-9999