Area Code 410-438 located in MARYDEL, CAROLINE, MD, more detail is as below. Place NPA (Numbering Plan Area) : 410 NXX (Local Number Prefix) : 438 City : MARYDEL County : CAROLINE State : MD (Maryland) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 24011 LATA (Local Access Transport Area) : 242 Rate Center : SUDLERSVL ZIP Code Count : 73 ZIP Code Frequency : 11 ZIP Code : 21649 Other Information NPANXX : 410438 Switch CLLI (Common Language Location Identifier) : SDVLMDSDRS0 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : VERIZON MARYLAND, INC. OCN (Operating Company Number) : 9212 Coverage Area Name : BARCLAY Latitude : 39.1873 Longitude : -75.8546 ‹ previous : 410-438 next › : 410-438 Telephone Number List 410-438-0000 ~ 410-438-9999