Area Code 617-584 located in READING, MIDDLESEX, MA, more detail is as below. Place NPA (Numbering Plan Area) : 617 NXX (Local Number Prefix) : 584 City : READING County : MIDDLESEX State : MA (Massachusetts) NXX Use Type : Wireless NXX Intro Version : 1995-02-11 FIPS (Federal Information Processing Standards) : 25017 LATA (Local Access Transport Area) : 128 Rate Center : NEWTON ZIP Code Count : 1 ZIP Code Frequency : 50 ZIP Code : 01867 Other Information NPANXX : 617584 Switch CLLI (Common Language Location Identifier) : CMBRMA0118T 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 : NEWTONVILLE Latitude : 42.3520 Longitude : -71.2080 ‹ previous : 617-584 next › : 617-585 Telephone Number List 617-584-0000 ~ 617-584-9999