Area Code 519-663 located in LONDON, , ON, more detail is as below. Place NPA (Numbering Plan Area) : 519 NXX (Local Number Prefix) : 663 City : LONDON 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 : N5Y 4X9 Other Information NPANXX : 519663 County Population : 32401 Time Zone : Eastern (GMT -05:00) Observes Daylight Saving Time : Yes Coverage Area Name : LONDON Latitude : 42.9841 Longitude : -81.2513 ‹ previous : 519-663 next › : 519-663 Telephone Number List 519-663-0000 ~ 519-663-9999