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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
312-697 A Chicago Zone 01-Wabash IL CHCGILWBDS0  9329 AMERITECH ILLINOIS 358      
312-697 0 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358      
312-697 1 Chicago Zone 01-Wabash IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2014-05-03   
312-697 2 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358      
312-697 3 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358      
312-697 4 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358      
312-697 5 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358      
312-697 6 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358      
312-697 7 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358      
312-697 8 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358      
312-697 9 Chicago Zone 01-Wabash IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2013-02-08   

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

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