Area Code 617-203 located in EVERETT, MIDDLESEX, MA, more detail is as below. Place NPA (Numbering Plan Area) : 617 NXX (Local Number Prefix) : 203 City : EVERETT County : MIDDLESEX State : MA (Massachusetts) NXX Use Type : Landline NXX Intro Version : 1999-07-22 FIPS (Federal Information Processing Standards) : 25017 LATA (Local Access Transport Area) : 128 Rate Center : EVERETT ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 02149 Other Information NPANXX : 617203 Switch CLLI (Common Language Location Identifier) : BSTNMALBDS0 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 : ALLEGIANCE TELECOM, INC. - MA OCN (Operating Company Number) : 6168 Coverage Area Name : EVERETT Latitude : 42.3419 Longitude : -71.0435 ‹ previous : 617-202 next › : 617-204 Telephone Number List 617-203-0000 ~ 617-203-9999