Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 479 [Rate centres in NPA 479] [Dial plan for NPA 479]

NXX: 590

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
479-590 A Fort Smith AR   578H AIRUS, INC. - AR 526   2026-04-19   
479-590 0 Fort Smith AR   348F ONVOY, LLC - AR 526   2026-05-18   
479-590 1 Fort Smith AR   578H AIRUS, INC. - AR 526   2026-04-19   
479-590 2 Fort Smith AR   515J IP HORIZON LLC 526   2026-06-19   
479-590 3 Fort Smith AR   7277 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - AR 526   2026-04-24   
479-590 4 Fort Smith AR   515J IP HORIZON LLC 526   2026-06-19   

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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