Area Code 289-238 located in DUNDAS, , ON, more detail is as below. Place NPA (Numbering Plan Area) : 289 NXX (Local Number Prefix) : 238 City : DUNDAS State : ON (Ontario) NXX Use Type : Landline NXX Intro Version : 2006-06-01 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 : 289238 County Population : 31593 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Coverage Area Name : DUNDAS Latitude : 43.2687 Longitude : -79.9616 ‹ previous : 289-237 next › : 289-239 Telephone Number List 289-238-0000 ~ 289-238-9999