Area Code 781-318 located in ARLINGTON, MIDDLESEX, MA, more detail is as below. Place NPA (Numbering Plan Area) : 781 NXX (Local Number Prefix) : 318 City : ARLINGTON County : MIDDLESEX State : MA (Massachusetts) NXX Use Type : Landline NXX Intro Version : 1997-10-11 FIPS (Federal Information Processing Standards) : 25017 LATA (Local Access Transport Area) : 128 Rate Center : STOUGHTON ZIP Code Count : 1 ZIP Code Frequency : 100 ZIP Code : 02474 Other Information NPANXX : 781318 Switch CLLI (Common Language Location Identifier) : BSTNMABLDS3 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 : MCIMETRO ACCESS TRANSMISSION SERVICES LLC OCN (Operating Company Number) : 7229 Coverage Area Name : STOUGHTON Latitude : 42.1185 Longitude : -71.1010 ‹ previous : 781-317 next › : 781-319 Telephone Number List 781-318-0000 ~ 781-318-9999