Area Code 403-731 located in DUFFIELD, , AB, more detail is as below. Place NPA (Numbering Plan Area) : 403 NXX (Local Number Prefix) : 731 City : DUFFIELD State : AB (Alberta) NXX Use Type : Landline NXX Intro Version : 2001-06-30 LATA (Local Access Transport Area) : 884 ZIP Code Count : 0 ZIP Code Frequency : 83 ZIP Code : T0E 0N0 Other Information NPANXX : 403731 County Population : 41713 Time Zone : Mountain (GMT -07:00) Observes Daylight Saving Time : Yes Coverage Area Name : CALGARY Latitude : 51.0478 Longitude : -114.0585 ‹ previous : 403-731 next › : 403-732 Telephone Number List 403-731-0000 ~ 403-731-9999