Area Code 508-603 located in UPTON, WORCESTER, MA, more detail is as below. Place NPA (Numbering Plan Area) : 508 NXX (Local Number Prefix) : 603 City : UPTON County : WORCESTER State : MA (Massachusetts) NXX Use Type : Landline NXX Intro Version : 2002-10-25 FIPS (Federal Information Processing Standards) : 25027 LATA (Local Access Transport Area) : 128 Rate Center : UPTON ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 01568 Other Information NPANXX : 508603 Switch CLLI (Common Language Location Identifier) : CMBRMAORDS3 MSA CBSA (Core Based Statistical Area) : Worcester, MA MSA CBSA Code (Core Based Statistical Area) : 49340 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 : UPTON Latitude : 42.1698 Longitude : -71.6005 ‹ previous : 508-600 next › : 508-612 Telephone Number List 508-603-0000 ~ 508-603-9999