Area Code 319-312 located in DYSART, TAMA, IA, more detail is as below. Place NPA (Numbering Plan Area) : 319 NXX (Local Number Prefix) : 312 City : DYSART County : TAMA State : IA (Iowa) NXX Use Type : Landline NXX Intro Version : 3/23/2010 FIPS (Federal Information Processing Standards) : 19171 LATA (Local Access Transport Area) : 635 Rate Center : DYSART ZIP Code Count : 0 ZIP Code Frequency : 0 ZIP Code : 52224 Other Information NPANXX : 319312 County Population : 0 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : MCC TELEPHONY OF IOWA, LLC - IA OCN (Operating Company Number) : 751F Coverage Area Name : DYSART Latitude : 42.1745 Longitude : -92.3034 ‹ previous : 319-310 next › : 319-313 Telephone Number List 319-312-0000 ~ 319-312-9999