Area Code 978-366 located in SUDBURY, MIDDLESEX, MA, more detail is as below. Place NPA (Numbering Plan Area) : 978 NXX (Local Number Prefix) : 366 City : SUDBURY County : MIDDLESEX State : MA (Massachusetts) NXX Use Type : Wireless NXX Intro Version : 1999-05-10 FIPS (Federal Information Processing Standards) : 25017 LATA (Local Access Transport Area) : 128 Rate Center : SUDBURY ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 01776 Other Information NPANXX : 978366 Switch CLLI (Common Language Location Identifier) : SDBRMABPDS0 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 : VERIZON NEW ENGLAND INC. OCN (Operating Company Number) : 9102 Coverage Area Name : SUDBURY Latitude : 42.3620 Longitude : -71.4123 ‹ previous : 978-365 next › : 978-367 Telephone Number List 978-366-0000 ~ 978-366-9999