Area Code 978-783 located in ANDOVER, ESSEX, MA, more detail is as below. Place NPA (Numbering Plan Area) : 978 NXX (Local Number Prefix) : 783 City : ANDOVER County : ESSEX State : MA (Massachusetts) NXX Use Type : Landline NXX Intro Version : 2001-10-31 FIPS (Federal Information Processing Standards) : 25009 LATA (Local Access Transport Area) : 128 Rate Center : ANDOVER ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 01810 Other Information NPANXX : 978783 Switch CLLI (Common Language Location Identifier) : WRCSMASNDS1 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 : CTC COMMUNICATIONS CORP. - MA OCN (Operating Company Number) : 3370 Coverage Area Name : ANDOVER Latitude : 42.6568 Longitude : -71.1394 ‹ previous : 978-782 next › : 978-784 Telephone Number List 978-783-0000 ~ 978-783-9999