Local Calling Guide

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NPA: 815 [Rate centres in NPA 815] [Dial plan for NPA 815]

NXX: 537

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
815-537 A Prophetstown IL PPTWILXADS0  1183 CITIZENS TELECOM CO ILLINOIS-FRONTIER CITIZENS -IL 364      

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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