Area Code 781-690 located in WESTWOOD, NORFOLK, MA, more detail is as below. Place NPA (Numbering Plan Area) : 781 NXX (Local Number Prefix) : 690 City : WESTWOOD County : NORFOLK State : MA (Massachusetts) NXX Use Type : Wireless NXX Intro Version : 1998-01-25 FIPS (Federal Information Processing Standards) : 25021 LATA (Local Access Transport Area) : 128 Rate Center : DEDHAM ZIP Code Count : 0 ZIP Code Frequency : Second most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 02090 Other Information NPANXX : 781690 Switch CLLI (Common Language Location Identifier) : DDHMMAEGDS0 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 : NEW CINGULAR WIRELESS PCS, LLC - DC OCN (Operating Company Number) : 4036 Coverage Area Name : DEDHAM Latitude : 42.2449 Longitude : -71.1756 ‹ previous : 781-689 next › : 781-690 Telephone Number List 781-690-0000 ~ 781-690-9999