Area Code 978-748 located in TYNGSBORO, MIDDLESEX, MA, more detail is as below. Place NPA (Numbering Plan Area) : 978 NXX (Local Number Prefix) : 748 City : TYNGSBORO County : MIDDLESEX State : MA (Massachusetts) NXX Use Type : Landline NXX Intro Version : 2000-08-20 FIPS (Federal Information Processing Standards) : 25017 LATA (Local Access Transport Area) : 128 Rate Center : TYNGSBORO ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 01879 Other Information NPANXX : 978748 Switch CLLI (Common Language Location Identifier) : BSTNMACODS6 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 CROSSING LOCAL SERVICES, INC.-MA OCN (Operating Company Number) : 8345 Coverage Area Name : TYNGSBORO Latitude : 42.6737 Longitude : -71.4244 ‹ previous : 978-747 next › : 978-749 Telephone Number List 978-748-0000 ~ 978-748-9999