Area Code 781-399 located in CANTON, NORFOLK, MA, more detail is as below. Place NPA (Numbering Plan Area) : 781 NXX (Local Number Prefix) : 399 City : CANTON County : NORFOLK State : MA (Massachusetts) NXX Use Type : Landline NXX Intro Version : 1997-10-11 FIPS (Federal Information Processing Standards) : 25021 LATA (Local Access Transport Area) : 128 Rate Center : MALDEN ZIP Code Count : 1 ZIP Code Frequency : 100 ZIP Code : 02021 Other Information NPANXX : 781399 Switch CLLI (Common Language Location Identifier) : CMBRMAORDS3 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 : LEVEL 3 COMMUNICATIONS, LLC - MA OCN (Operating Company Number) : 4018 Coverage Area Name : MALDEN Latitude : 42.3648 Longitude : -71.0819 ‹ previous : 781-398 next › : 781-400 Telephone Number List 781-399-0000 ~ 781-399-9999