Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 312 [Rate centres in NPA 312] [Dial plan for NPA 312]

NXX: 496

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
312-496 A Chicago Zone 01-Canal IL CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358      
312-496 0 Chicago Zone 01-Canal IL CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358      
312-496 1 Chicago Zone 01-Canal IL CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358      
312-496 2 Chicago Zone 01-Canal IL CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358      
312-496 3 Chicago Zone 01-Canal IL CHCGILNEXJX  318J COMCAST IP PHONE LLC 358   2011-01-19   
312-496 4 Chicago Zone 01-Canal IL CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358      
312-496 5 Chicago Zone 01-Canal IL CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358      
312-496 6 Chicago Zone 01-Canal IL CHCGILCPDS5  4717 PAETEC COMMUNICATIONS, INC. - IL 358   2007-03-13   
312-496 7 Chicago Zone 01-Canal IL CHCGILCPDS5  4717 PAETEC COMMUNICATIONS, INC. - IL 358   2007-03-13   
312-496 8 Chicago Zone 01-Canal IL CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358      
312-496 9 Chicago Zone 01-Canal IL CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358      

Last updated: Fri, 13 May 2022 22:16:13 UTC

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