Area Code 319-228 located in KEYSTONE, BENTON, IA, more detail is as below. Place NPA (Numbering Plan Area) : 319 NXX (Local Number Prefix) : 228 City : KEYSTONE County : BENTON State : IA (Iowa) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 19011 LATA (Local Access Transport Area) : 635 Rate Center : VAN HORNE ZIP Code Count : 60 ZIP Code Frequency : 13 ZIP Code : 52249 Other Information NPANXX : 319228 County Population : 0 Switch CLLI (Common Language Location Identifier) : VNHRIAXODS0 MSA CBSA (Core Based Statistical Area) : Cedar Rapids, IA MSA CBSA Code (Core Based Statistical Area) : 16300 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : VAN HORNE COOPERATIVE TELEPHONE COMPANY OCN (Operating Company Number) : 1320 Coverage Area Name : VAN HORNE Latitude : 42.0114 Longitude : -92.0858 ‹ previous : 319-227 next › : 319-228 Telephone Number List 319-228-0000 ~ 319-228-9999