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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
312-994 A Chicago Zone 01-Wabash IL CHCGILWUDS0  7765 OVATION COMMUNICATIONS OF ILLINOIS, INC. 358      
312-994 0 Chicago Zone 01-Wabash IL   7765 OVATION COMMUNICATIONS OF ILLINOIS, INC. 358      
312-994 1 Chicago Zone 01-Wabash IL   7765 OVATION COMMUNICATIONS OF ILLINOIS, INC. 358   2009-08-25   
312-994 2 Chicago Zone 01-Wabash IL   7721 BROADWING COMMUNICATIONS, LLC - IL 358   2002-09-16   
312-994 3 Chicago Zone 01-Wabash IL   7765 OVATION COMMUNICATIONS OF ILLINOIS, INC. 358   2010-04-22   
312-994 4 Chicago Zone 01-Wabash IL   7765 OVATION COMMUNICATIONS OF ILLINOIS, INC. 358   2009-08-28   
312-994 5 Chicago Zone 01-Wabash IL   7765 OVATION COMMUNICATIONS OF ILLINOIS, INC. 358      
312-994 6 Chicago Zone 01-Wabash IL   4604 FIRST COMMUNICATIONS LLC - IL 358   2001-06-15   
312-994 7 Chicago Zone 01-Wabash IL   4604 FIRST COMMUNICATIONS LLC - IL 358   2000-08-04   
312-994 8 Chicago Zone 01-Wabash IL   7765 OVATION COMMUNICATIONS OF ILLINOIS, INC. 358   2007-05-18   
312-994 9 Chicago Zone 01-Wabash IL   7765 OVATION COMMUNICATIONS OF ILLINOIS, INC. 358   2000-06-29   

Last updated: Tue, 31 Dec 2019 02:37:20 UTC

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