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: MARTTN171MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
731-274 5 Sidonia TN 792K CHARTER IP ENABLED SERVICES, LLC 468   2023-01-13   
731-275 3 Palmersville TN 792K CHARTER IP ENABLED SERVICES, LLC 468   2023-03-05   
731-281 4 Martin TN 792K CHARTER IP ENABLED SERVICES, LLC 468   2006-09-09   
731-281 7 Martin TN 792K CHARTER IP ENABLED SERVICES, LLC 468   2012-09-06   
731-703 A Sharon TN 792K CHARTER IP ENABLED SERVICES, LLC 468      
731-703 0 Sharon TN 792K CHARTER IP ENABLED SERVICES, LLC 468      

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

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