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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OCN: 159H SMARTEDGENET, LLC

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
305-239 A Keys FL MIAMFL98YMD  46017      
305-239 1 Keys FL MIAMFL98YMD  46017   2013-10-15   
407-528 A Celebration FL ORLDFL60WMD  45807      
469-283 A Dallas TX DLLSTX3783Z  552      

Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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