Area Code 617-710 located in BILLERICA, MIDDLESEX, MA, more detail is as below. Place NPA (Numbering Plan Area) : 617 NXX (Local Number Prefix) : 710 City : BILLERICA County : MIDDLESEX State : MA (Massachusetts) NXX Use Type : Wireless NXX Intro Version : 1996-10-15 FIPS (Federal Information Processing Standards) : 25017 LATA (Local Access Transport Area) : 128 Rate Center : CAMBRIDGE ZIP Code Count : 1 ZIP Code Frequency : 100 ZIP Code : 01821 Other Information NPANXX : 617710 Switch CLLI (Common Language Location Identifier) : WLHMMASEDS0 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 : CAMBRIDGE Latitude : 42.3720 Longitude : -71.1137 ‹ previous : 617-708 next › : 617-712 Telephone Number List 617-710-0000 ~ 617-710-9999