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: 470

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
312-470 A Chicago Zone 01-Monroe IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-470 0 Chicago Zone 01-Monroe IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-470 1 Chicago Zone 01-Monroe IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-470 2 Chicago Zone 01-Monroe IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-470 3 Chicago Zone 01-Monroe IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-470 4 Chicago Zone 01-Monroe IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-470 5 Chicago Zone 01-Monroe IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-470 6 Chicago Zone 01-Monroe IL CHCGILGMDS7  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 358   2010-11-20   
312-470 7 Chicago Zone 01-Monroe IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-470 8 Chicago Zone 01-Monroe IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      
312-470 9 Chicago Zone 01-Monroe IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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