Area Code 617-288 located in DORCHESTER, SUFFOLK, MA, more detail is as below. Place NPA (Numbering Plan Area) : 617 NXX (Local Number Prefix) : 288 City : DORCHESTER County : SUFFOLK State : MA (Massachusetts) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 25025 LATA (Local Access Transport Area) : 128 Rate Center : DORCHESTER ZIP Code Count : 225 ZIP Code Frequency : 6 ZIP Code : 02121 Other Information NPANXX : 617288 Switch CLLI (Common Language Location Identifier) : DRCHMAADDS1 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 : DORCHESTER Latitude : 42.2988 Longitude : -71.0597 ‹ previous : 617-288 next › : 617-288 Telephone Number List 617-288-0000 ~ 617-288-9999