Area Code 479-431 located in FORT SMITH, SEBASTIAN, AR, more detail is as below. Place NPA (Numbering Plan Area) : 479 NXX (Local Number Prefix) : 431 City : FORT SMITH County : SEBASTIAN State : AR (Arkansas) NXX Use Type : Landline NXX Intro Version : 2002-10-25 FIPS (Federal Information Processing Standards) : 05131 LATA (Local Access Transport Area) : 526 Rate Center : FORT SMITH ZIP Code Count : 0 ZIP Code Frequency : Most frequently occurring ZIP Code, although percentage is unknown. ZIP Code : 72904 Other Information NPANXX : 479431 County Population : 0 Switch CLLI (Common Language Location Identifier) : FTSMARABMMD MSA CBSA (Core Based Statistical Area) : Fort Smith, AR-OK MSA CBSA Code (Core Based Statistical Area) : 22900 Time Zone : Central (GMT -06:00) Observes Daylight Saving Time : Yes Company : LEVEL 3 COMMUNICATIONS, LLC - AR OCN (Operating Company Number) : 5179 Coverage Area Name : FORT SMITH Latitude : 35.3823 Longitude : -94.4168 ‹ previous : 479-431 next › : 479-432 Telephone Number List 479-431-0000 ~ 479-431-9999