Area Code 240-343 located in HANCOCK, WASHINGTON, MD, more detail is as below. Place NPA (Numbering Plan Area) : 240 NXX (Local Number Prefix) : 343 City : HANCOCK County : WASHINGTON State : MD (Maryland) NXX Use Type : Wireless NXX Intro Version : 5/10/2011 FIPS (Federal Information Processing Standards) : 24043 LATA (Local Access Transport Area) : 240 Rate Center : HANCOCK ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 21750 Other Information NPANXX : 240343 County Population : 0 MSA CBSA (Core Based Statistical Area) : Hagerstown-Martinsburg, MD-WV MSA CBSA Code (Core Based Statistical Area) : 25180 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Overlay : L Company : CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD OCN (Operating Company Number) : 6395 Coverage Area Name : HANCOCK Latitude : 39.7090 Longitude : -78.1732 ‹ previous : 240-342 next › : 240-344 Telephone Number List 240-343-0000 ~ 240-343-9999