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
312-525 A Chicago Zone 01-Wabash IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-525 0 Chicago Zone 01-Wabash IL   6664 SPRINT SPECTRUM L.P. 358   2004-03-19   
312-525 1 Chicago Zone 01-Wabash IL   6664 SPRINT SPECTRUM L.P. 358   2004-03-19   
312-525 2 Chicago Zone 01-Wabash IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-525 3 Chicago Zone 01-Wabash IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-525 4 Chicago Zone 01-Wabash IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-525 5 Chicago Zone 01-Wabash IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-525 6 Chicago Zone 01-Wabash IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-525 7 Chicago Zone 01-Wabash IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-525 8 Chicago Zone 01-Wabash IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-525 9 Chicago Zone 01-Wabash IL   7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      

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

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