Local Calling Guide

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

NXX: 569

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
312-569 A Chicago Zone 01-Monroe IL CHCGILMODS1  9329 ILLINOIS BELL TEL CO 358      
312-569 0 Chicago Zone 01-Monroe IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358      
312-569 1 Chicago Zone 01-Monroe IL OKBRILOAXEX  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-569 2 Chicago Zone 01-Monroe IL CHCGILMF4MD  5562 METROPCS, INC. 358      
312-569 3 Chicago Zone 01-Monroe IL CHCGIL24DS6  224C ONVOY, LLC 358      
312-569 4 Chicago Zone 01-Monroe IL CHCGILMODS1  9329 ILLINOIS BELL TEL CO 358      
312-569 5 Chicago Zone 01-Monroe IL CHCGILMODS1  9329 ILLINOIS BELL TEL CO 358      
312-569 6 Chicago Zone 01-Monroe IL CHCGILMODS1  9329 ILLINOIS BELL TEL CO 358      
312-569 7 Chicago Zone 01-Monroe IL CHCGILMODS1  9329 ILLINOIS BELL TEL CO 358      
312-569 8 Chicago Zone 01-Monroe IL CHCGILMODS1  9329 ILLINOIS BELL TEL CO 358      
312-569 9 Chicago Zone 01-Monroe IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358      

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

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