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: 589

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
312-589 A Chicago Zone 01-Canal IL CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358      
312-589 0 Chicago Zone 01-Canal IL CHCGILMF4MD  5562 METROPCS, INC. 358   2011-01-05   
312-589 1 Chicago Zone 01-Canal IL CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358      
312-589 2 Chicago Zone 01-Canal IL CHCGILWUX1X  7765 OVATION COMMUNICATIONS OF ILLINOIS, INC. 358   2008-06-02   
312-589 3 Chicago Zone 01-Canal IL CHCGILWUX1X  7765 OVATION COMMUNICATIONS OF ILLINOIS, INC. 358   2008-06-02   
312-589 4 Chicago Zone 01-Canal IL CHCGILWUX1X  7765 OVATION COMMUNICATIONS OF ILLINOIS, INC. 358   2008-10-25   
312-589 5 Chicago Zone 01-Canal IL CHCGIL24DS3  4604 FIRST COMMUNICATIONS, LLC - IL 358   2006-03-27   
312-589 6 Chicago Zone 01-Canal IL CHCGILWUX1X  4717 PAETEC COMMUNICATIONS, INC. - IL 358   2007-05-09   
312-589 7 Chicago Zone 01-Canal IL CHCGILTCDS4  7056 XO ILLINOIS, INC. 358   2011-01-05   
312-589 8 Chicago Zone 01-Canal IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2013-02-08   
312-589 9 Chicago Zone 01-Canal IL CHCGILCLDS3  9329 ILLINOIS BELL TEL CO 358      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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