Local Calling Guide

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NPA: 312 [Rate centres in NPA 312] [Dial plan for NPA 312]

NXX: 242

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
312-242 A Chicago Zone 01-Wabash IL CHCGILCGDS1  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-242 0 Chicago Zone 01-Wabash IL CHCGILCGDS1  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-242 1 Chicago Zone 01-Wabash IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2000-10-13   
312-242 2 Chicago Zone 01-Wabash IL CHCGIL24DS3  4604 FIRST COMMUNICATIONS, LLC - IL 358   2002-07-03   
312-242 3 Chicago Zone 01-Wabash IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2002-04-23   
312-242 4 Chicago Zone 01-Wabash IL CHCGIL24DS3  4604 FIRST COMMUNICATIONS, LLC - IL 358   2001-07-09   
312-242 5 Chicago Zone 01-Wabash IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2001-01-17   
312-242 6 Chicago Zone 01-Wabash IL CHCGIL24DS3  4604 FIRST COMMUNICATIONS, LLC - IL 358   2001-07-09   
312-242 7 Chicago Zone 01-Wabash IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2000-11-20   
312-242 8 Chicago Zone 01-Wabash IL CHCGIL24DS3  4604 FIRST COMMUNICATIONS, LLC - IL 358   2001-07-09   
312-242 9 Chicago Zone 01-Wabash IL CHCGIL24DS3  4604 FIRST COMMUNICATIONS, LLC - IL 358   2001-07-09   

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

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