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: 572

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
312-572 A Chicago Zone 01-Monroe IL CHCGILMODS0  9329 ILLINOIS BELL TEL CO 358      
312-572 0 Chicago Zone 01-Monroe IL CHCGILMF4MD  5562 METROPCS, INC. 358   2017-02-05   
312-572 1 Chicago Zone 01-Monroe IL CHCGILMODS0  9329 ILLINOIS BELL TEL CO 358      
312-572 2 Chicago Zone 01-Monroe IL CHCGILMODS0  9329 ILLINOIS BELL TEL CO 358      
312-572 3 Chicago Zone 01-Monroe IL CHCGILMODS0  9329 ILLINOIS BELL TEL CO 358      
312-572 4 Chicago Zone 01-Monroe IL CHCGILMODS0  9329 ILLINOIS BELL TEL CO 358      
312-572 5 Chicago Zone 01-Monroe IL CHCGILMODS0  9329 ILLINOIS BELL TEL CO 358      
312-572 6 Chicago Zone 01-Monroe IL CHCGILWUX1X  4717 PAETEC COMMUNICATIONS, INC. - IL 358   2009-09-29   
312-572 7 Chicago Zone 01-Monroe IL CHCGILWUX1X  4717 PAETEC COMMUNICATIONS, INC. - IL 358   2007-12-14   
312-572 8 Chicago Zone 01-Monroe IL CHCGILWUX1X  4717 PAETEC COMMUNICATIONS, INC. - IL 358   2009-09-29   
312-572 9 Chicago Zone 01-Monroe IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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