Area Code 301-494 located in LUSBY, CALVERT, MD, more detail is as below. Place NPA (Numbering Plan Area) : 301 NXX (Local Number Prefix) : 494 City : LUSBY County : CALVERT State : MD (Maryland) NXX Use Type : Landline NXX Intro Version : 1996-10-15 FIPS (Federal Information Processing Standards) : 24009 LATA (Local Access Transport Area) : 238 Rate Center : WSNG238Z15 ZIP Code Count : 48 ZIP Code Frequency : 10 ZIP Code : 20657 Other Information NPANXX : 301494 County Population : 0 Switch CLLI (Common Language Location Identifier) : PRFRMDPFRS1 MSA CBSA (Core Based Statistical Area) : Washington-Arlington-Alexandria, DC-VA-MD-WV MSA CBSA Code (Core Based Statistical Area) : 47900 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : VERIZON MARYLAND, INC. OCN (Operating Company Number) : 9212 Coverage Area Name : UPPER MARLBORO Latitude : 38.8180 Longitude : -76.7541 ‹ previous : 301-494 next › : 301-494 Telephone Number List 301-494-0000 ~ 301-494-9999