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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Rock Island, TN

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
931-331 A CKVLTNXA1MD  704C CHARTER FIBERLINK-TENNESSEE, LLC - TN 470      
931-331 1 CKVLTNXA1MD  704C CHARTER FIBERLINK-TENNESSEE, LLC - TN 470   2015-11-29   
931-331 3   145J TERRA NOVA TELECOM INC. 470   2025-08-10   
931-686 A MMRLTNXADS0  0553 BEN LOMAND RURAL TEL. COOP., INC. 470      

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

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