Area Code 289-331 located in DUNNVILLE, , ON, more detail is as below. Place NPA (Numbering Plan Area) : 289 NXX (Local Number Prefix) : 331 City : DUNNVILLE State : ON (Ontario) NXX Use Type : Wireless NXX Intro Version : 2001-10-31 LATA (Local Access Transport Area) : 851 ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. Other Information NPANXX : 289331 County Population : 11848 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Coverage Area Name : DUNNVILLE Latitude : 42.9008 Longitude : -79.6197 ‹ previous : 289-321 next › : 289-333 Telephone Number List 289-331-0000 ~ 289-331-9999