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
312-547 A Chicago Zone 01-Wabash IL BURGILAHGT3  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      
312-547 0 Chicago Zone 01-Wabash IL   6664 SPRINT SPECTRUM L.P. 358   2011-01-05   
312-547 1 Chicago Zone 01-Wabash IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2011-09-25   
312-547 2 Chicago Zone 01-Wabash IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2008-11-01   
312-547 3 Chicago Zone 01-Wabash IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2008-11-01   
312-547 4 Chicago Zone 01-Wabash IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2008-11-01   
312-547 5 Chicago Zone 01-Wabash IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2008-11-01   
312-547 6 Chicago Zone 01-Wabash IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2008-11-01   
312-547 7 Chicago Zone 01-Wabash IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2008-11-01   
312-547 8 Chicago Zone 01-Wabash IL   7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358   2008-11-01   
312-547 9 Chicago Zone 01-Wabash IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 358      

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

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