Area Code 413-729 located in WESTFIELD, HAMPDEN, MA, more detail is as below. Place NPA (Numbering Plan Area) : 413 NXX (Local Number Prefix) : 729 City : WESTFIELD County : HAMPDEN State : MA (Massachusetts) NXX Use Type : Landline NXX Intro Version : 2000-08-20 FIPS (Federal Information Processing Standards) : 25013 LATA (Local Access Transport Area) : 126 Rate Center : WESTFIELD ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 01085 Other Information NPANXX : 413729 Switch CLLI (Common Language Location Identifier) : SPFDMAOIRS0 MSA CBSA (Core Based Statistical Area) : Springfield, MA MSA CBSA Code (Core Based Statistical Area) : 44140 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Company : RNK, INC. OCN (Operating Company Number) : 8700 Coverage Area Name : WESTFIELD Latitude : 42.1237 Longitude : -72.7542 ‹ previous : 413-728 next › : 413-730 Telephone Number List 413-729-0000 ~ 413-729-9999