Local Calling Guide

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Search area code/prefix (NPA/NXX)
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NPA: 312 [Rate centres in NPA 312] [Dial plan for NPA 312]

NXX: 348

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
312-348 A Chicago Zone 01-Calumet IL CHCGIL24DS6  224C ONVOY, LLC 358      
312-348 0 Chicago Zone 01-Calumet IL CHCGILMF4MD  5562 METROPCS, INC. 358   2009-05-22   
312-348 1 Chicago Zone 01-Calumet IL CHCGILDTDS3  5447 ACCESS ONE, INC. - IL 358   2009-02-21   
312-348 2 Chicago Zone 01-Calumet IL EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358   2008-06-17   
312-348 3 Chicago Zone 01-Calumet IL EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358   2008-06-17   
312-348 4 Chicago Zone 01-Calumet IL EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358   2008-06-17   
312-348 5 Chicago Zone 01-Calumet IL EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358   2008-06-17   
312-348 6 Chicago Zone 01-Calumet IL EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358   2008-06-17   
312-348 7 Chicago Zone 01-Calumet IL EGVGILIFDS1  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 358   2008-06-17   
312-348 8 Chicago Zone 01-Calumet IL CHCGIL24DS6  224C ONVOY, LLC 358   2004-01-05   
312-348 9 Chicago Zone 01-Calumet IL CHCGILMF4MD  5562 METROPCS, INC. 358   2009-05-22   

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

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