Area Code 617-329 located in DEDHAM, NORFOLK, MA, more detail is as below. Place NPA (Numbering Plan Area) : 617 NXX (Local Number Prefix) : 329 City : DEDHAM County : NORFOLK State : MA (Massachusetts) NXX Use Type : Landline NXX Intro Version : 1998-01-25 FIPS (Federal Information Processing Standards) : 25021 LATA (Local Access Transport Area) : 128 Rate Center : WINTHROP ZIP Code Count : 3 ZIP Code Frequency : 100 ZIP Code : 02026 Other Information NPANXX : 617329 Switch CLLI (Common Language Location Identifier) : SBTNMAFHDS0 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 Company : RCN TELECOM SERVICES, INC. - MA OCN (Operating Company Number) : 7619 Coverage Area Name : WINTHROP Latitude : 42.3754 Longitude : -70.9819 ‹ previous : 617-328 next › : 617-330 Telephone Number List 617-329-0000 ~ 617-329-9999