Area Code 905-427 located in AJAX, , ON, more detail is as below. Place NPA (Numbering Plan Area) : 905 NXX (Local Number Prefix) : 427 City : AJAX State : ON (Ontario) NXX Use Type : Landline NXX Intro Version : 1994-02-04 LATA (Local Access Transport Area) : 851 ZIP Code Count : 0 ZIP Code Frequency : 1 ZIP Code : L1S 4G7 Other Information NPANXX : 905427 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Coverage Area Name : PICKERING Latitude : 43.8584 Longitude : -79.0551 ‹ previous : 905-427 next › : 905-427 Telephone Number List 905-427-0000 ~ 905-427-9999