Area Code 339-222 located in WALTHAM, MIDDLESEX, MA, more detail is as below. Place NPA (Numbering Plan Area) : 339 NXX (Local Number Prefix) : 222 City : WALTHAM County : MIDDLESEX State : MA (Massachusetts) NXX Use Type : Wireless NXX Intro Version : 2001-10-31 FIPS (Federal Information Processing Standards) : 25017 LATA (Local Access Transport Area) : 128 Rate Center : WALTHAM ZIP Code Count : 0 ZIP Code Frequency : Second most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 02452 Other Information NPANXX : 339222 County Population : 0 Switch CLLI (Common Language Location Identifier) : WRXBMAWACM2 MSA CBSA (Core Based Statistical Area) : Boston-Cambridge-Quincy, MA-NH MSA CBSA Code (Core Based Statistical Area) : 14460 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Overlay : L Company : CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MA OCN (Operating Company Number) : 6387 Coverage Area Name : WALTHAM Latitude : 42.3755 Longitude : -71.2377 ‹ previous : 339-221 next › : 339-222 Telephone Number List 339-222-0000 ~ 339-222-9999