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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Florida, NY

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
845-508 A   612K CSC VOICE, LLC 133      
845-508 0   793K TWC IP ENABLED SERVICES, LLC 133   2019-12-12   
845-508 1   490J DISH WIRELESS, LLC 133   2025-04-10   
845-508 2   490J DISH WIRELESS, LLC 133   2025-08-20   
845-508 3   4006 LEVEL 3 COMMUNICATIONS, LLC - NY 133   2018-08-14   
845-508 6   612K CSC VOICE, LLC 133   2004-10-11   
845-508 9   818H PEERING HUB, INC. - NY 133   2023-08-09   
845-651 A FLRDNYXARS0  0135 ALTEVA OF WARWICK LLC 133      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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