Local Calling Guide

Area code/prefix search

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NPA: 931 [Rate centres in NPA 931] [Dial plan for NPA 931]

NXX: 331

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
931-331 A Rock Island TN   792K CHARTER IP ENABLED SERVICES, LLC 470      
931-331 1 Rock Island TN   792K CHARTER IP ENABLED SERVICES, LLC 470   2015-11-29   
931-331 3 Rock Island TN   145J TERRA NOVA TELECOM INC. 470   2025-08-10   

Last updated: Mon, 15 Sep 2025 02:24:40 UTC

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