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: 270

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
312-270 A Chicago Zone 01-Calumet IL CHCGILMF4MD  5562 METROPCS, INC. 358      
312-270 0 Chicago Zone 01-Calumet IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2017-03-10   
312-270 1 Chicago Zone 01-Calumet IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2017-03-10   
312-270 2 Chicago Zone 01-Calumet IL BNSVILDGDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 358   2017-03-10   
312-270 3 Chicago Zone 01-Calumet IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-04-07   
312-270 4 Chicago Zone 01-Calumet IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-04-07   
312-270 5 Chicago Zone 01-Calumet IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-04-07   
312-270 6 Chicago Zone 01-Calumet IL RVDLILBDAMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 358   2017-04-07   
312-270 7 Chicago Zone 01-Calumet IL CHCGILDTDMD  156J RCLEC, INC. 358   2017-03-10   
312-270 8 Chicago Zone 01-Calumet IL CHCGILWUJMD  073H TELNYX LLC 358   2017-03-17   
312-270 9 Chicago Zone 01-Calumet IL CHCGILMF4MD  5562 METROPCS, INC. 358   2017-03-09   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

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