Area Code 509-485 located in TONASKET, OKANOGAN, WA, more detail is as below. Place NPA (Numbering Plan Area) : 509 NXX (Local Number Prefix) : 485 City : TONASKET County : OKANOGAN State : WA (Washington) NXX Use Type : Landline NXX Intro Version : 1994-02-04 FIPS (Federal Information Processing Standards) : 53047 LATA (Local Access Transport Area) : 676 Rate Center : MOLSON ZIP Code Count : 50 ZIP Code Frequency : 18 ZIP Code : 98855 Other Information NPANXX : 509485 Switch CLLI (Common Language Location Identifier) : MLSNWAXARS2 Time Zone : Pacific (GMT -08:00) Observes Daylight Saving Time : Yes Company : FRONTIER COMMUNICATIONS NORTHWEST INC. - WA OCN (Operating Company Number) : 4423 Coverage Area Name : MOLSON Latitude : 48.9128 Longitude : -119.1888 ‹ previous : 509-484 next › : 509-485 Telephone Number List 509-485-0000 ~ 509-485-9999