Area Code 617-257 located in LYNN, ESSEX, MA, more detail is as below. Place NPA (Numbering Plan Area) : 617 NXX (Local Number Prefix) : 257 City : LYNN County : ESSEX State : MA (Massachusetts) NXX Use Type : Wireless NXX Intro Version : 1998-01-25 FIPS (Federal Information Processing Standards) : 25009 LATA (Local Access Transport Area) : 128 Rate Center : SAUGUS ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 01905 Other Information NPANXX : 617257 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 : SAUGUS Latitude : 42.4506 Longitude : -71.0097 ‹ previous : 617-257 next › : 617-258 Telephone Number List 617-257-0000 ~ 617-257-9999