Area Code 289-284 located in CALEDONIA, , ON, more detail is as below. Place NPA (Numbering Plan Area) : 289 NXX (Local Number Prefix) : 284 City : CALEDONIA State : ON (Ontario) NXX Use Type : Landline NXX Intro Version : 2005-06-25 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 : 289284 County Population : 13717 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Coverage Area Name : CALEDONIA Latitude : 43.0755 Longitude : -79.9484 ‹ previous : 289-283 next › : 289-285 Telephone Number List 289-284-0000 ~ 289-284-9999