Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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Switch: JCVLOR56RS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
458-283 A Jacksonville OR 9638 QWEST CORPORATION 670      
458-283 1 Jacksonville OR 9638 QWEST CORPORATION 670   2026-06-17   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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