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: 788

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
312-788 A Chicago Zone 01-Wabash IL CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-788 0 Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-788 1 Chicago Zone 01-Wabash IL   460K FIRST COMMUNICATIONS, LLC 358      
312-788 2 Chicago Zone 01-Wabash IL   460K FIRST COMMUNICATIONS, LLC 358      
312-788 3 Chicago Zone 01-Wabash IL CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-788 4 Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-788 5 Chicago Zone 01-Wabash IL CHCGILWBDS2  9329 ILLINOIS BELL TEL CO 358      
312-788 6 Chicago Zone 01-Wabash IL CHCGILDT8MD  508J CENTURYLINK COMMUNICATIONS, LLC 358      
312-788 7 Chicago Zone 01-Wabash IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358      
312-788 8 Chicago Zone 01-Wabash IL   224C ONVOY, LLC 358      
312-788 9 Chicago Zone 01-Wabash IL   224C ONVOY, LLC 358      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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