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
312-945 A Chicago Zone 01-Wabash IL CHCGILCADS0  9329 AMERITECH ILLINOIS 358      
312-945 0 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358      
312-945 1 Chicago Zone 01-Wabash IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-08-07   
312-945 2 Chicago Zone 01-Wabash IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358   2011-05-07   
312-945 3 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358      
312-945 4 Chicago Zone 01-Wabash IL   9329 AMERITECH ILLINOIS 358      
312-945 5 Chicago Zone 01-Wabash IL   7056 XO ILLINOIS, INC. 358   2009-10-12   
312-945 6 Chicago Zone 01-Wabash IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-945 7 Chicago Zone 01-Wabash IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-09-19   
312-945 8 Chicago Zone 01-Wabash IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2010-03-04   
312-945 9 Chicago Zone 01-Wabash IL   6529 T-MOBILE USA, INC. 358   2009-05-18   

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

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