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: 768

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
312-768 A Chicago Zone 01-Canal IL CHCGILCLEMD  7421 AT&T - LOCAL 358      
312-768 0 Chicago Zone 01-Canal IL CHCGILMF2MD  6664 SPRINT SPECTRUM, L.P. 358   2011-02-24   
312-768 1 Chicago Zone 01-Canal IL CHCGILCPDS5  4717 PAETEC COMMUNICATIONS, INC. - IL 358   2009-04-16   
312-768 2 Chicago Zone 01-Canal IL CHCGILCLDS0  9329 ILLINOIS BELL TEL CO 358   2002-10-23   
312-768 3 Chicago Zone 01-Canal IL CHCGILMF2MD  6664 SPRINT SPECTRUM, L.P. 358   2011-01-05   
312-768 4 Chicago Zone 01-Canal IL CHCGILDTDS3  5447 ACCESS ONE, INC. - IL 358   2007-09-22   
312-768 5 Chicago Zone 01-Canal IL CHCGILCLEMD  7421 AT&T - LOCAL 358      
312-768 6 Chicago Zone 01-Canal IL CHCGILDTDS3  5447 ACCESS ONE, INC. - IL 358   2007-09-22   
312-768 7 Chicago Zone 01-Canal IL CHCGIL24DS3  4604 FIRST COMMUNICATIONS LLC - IL 358   2005-02-20   
312-768 8 Chicago Zone 01-Canal IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-768 9 Chicago Zone 01-Canal IL CHCGILMF2MD  6664 SPRINT SPECTRUM, L.P. 358   2011-05-26   

Last updated: Fri, 13 May 2022 22:16:13 UTC

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