Area Code 781-623 located in MELROSE, MIDDLESEX, MA, more detail is as below. Place NPA (Numbering Plan Area) : 781 NXX (Local Number Prefix) : 623 City : MELROSE County : MIDDLESEX State : MA (Massachusetts) NXX Use Type : Landline NXX Intro Version : 1998-05-18 FIPS (Federal Information Processing Standards) : 25017 LATA (Local Access Transport Area) : 128 Rate Center : LYNNFIELD ZIP Code Count : 1 ZIP Code Frequency : 33 ZIP Code : 02176 Other Information NPANXX : 781623 Switch CLLI (Common Language Location Identifier) : QNCYMACE5MD 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 : GLOBAL NAPS, INC.-MA OCN (Operating Company Number) : 7755 Coverage Area Name : LYNNFIELD Latitude : 42.5380 Longitude : -71.0480 ‹ previous : 781-623 next › : 781-624 Telephone Number List 781-623-0000 ~ 781-623-9999