Area Code 781-316 located in ARLINGTON, MIDDLESEX, MA, more detail is as below. Place NPA (Numbering Plan Area) : 781 NXX (Local Number Prefix) : 316 City : ARLINGTON County : MIDDLESEX State : MA (Massachusetts) NXX Use Type : Landline NXX Intro Version : 1998-01-25 FIPS (Federal Information Processing Standards) : 25017 LATA (Local Access Transport Area) : 128 Rate Center : ARLINGTON ZIP Code Count : 145 ZIP Code Frequency : 30 ZIP Code : 02476 Other Information NPANXX : 781316 Switch CLLI (Common Language Location Identifier) : SBTNMAFHDS0 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 : RCN TELECOM SERVICES, INC. - MA OCN (Operating Company Number) : 7619 Coverage Area Name : ARLINGTON Latitude : 42.4140 Longitude : -71.1548 ‹ previous : 781-315 next › : 781-316 Telephone Number List 781-316-0000 ~ 781-316-9999