Area Code 508-403 located in HARWICH, BARNSTABLE, MA, more detail is as below. Place NPA (Numbering Plan Area) : 508 NXX (Local Number Prefix) : 403 City : HARWICH County : BARNSTABLE State : MA (Massachusetts) NXX Use Type : Landline NXX Intro Version : 1998-01-25 FIPS (Federal Information Processing Standards) : 25001 LATA (Local Access Transport Area) : 128 Rate Center : CATAUMET ZIP Code Count : 1 ZIP Code Frequency : 100 ZIP Code : 02645 Other Information NPANXX : 508403 Switch CLLI (Common Language Location Identifier) : CMBRMAORDS3 MSA CBSA (Core Based Statistical Area) : Barnstable Town, MA MSA CBSA Code (Core Based Statistical Area) : 12700 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : LEVEL 3 COMMUNICATIONS, LLC - MA OCN (Operating Company Number) : 4018 Coverage Area Name : NORTH FALMOUTH Latitude : 41.6657 Longitude : -70.6116 ‹ previous : 508-402 next › : 508-404 Telephone Number List 508-403-0000 ~ 508-403-9999