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: 530

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
312-530 A Chicago Zone 01-Calumet IL CHCGIL24XMD  495J STRATUS NETWORKS 358      
312-530 0 Chicago Zone 01-Calumet IL CHCGIL245MD  073H TELNYX LLC 358   2020-11-08   
312-530 1 Chicago Zone 01-Calumet IL CHCGIL24XMD  495J STRATUS NETWORKS 358   2020-09-20   
312-530 2 Chicago Zone 01-Calumet IL CHCGILMF4MD  5562 METROPCS, INC. 358   2020-09-21   
312-530 3 Chicago Zone 01-Calumet IL CHCGILMF4MD  5562 METROPCS, INC. 358   2020-09-21   
312-530 4 Chicago Zone 01-Calumet IL CHCGILMF4MD  5562 METROPCS, INC. 358   2020-09-21   
312-530 5 Chicago Zone 01-Calumet IL CHCGILMF4MD  5562 METROPCS, INC. 358   2020-09-21   
312-530 6 Chicago Zone 01-Calumet IL CHCGILMF4MD  5562 METROPCS, INC. 358   2020-09-21   
312-530 7 Chicago Zone 01-Calumet IL CHCGIL24DS6  224C ONVOY, LLC 358   2020-11-09   
312-530 8 Chicago Zone 01-Calumet IL CHCGIL24DS6  224C ONVOY, LLC 358   2020-11-09   
312-530 9 Chicago Zone 01-Calumet IL CHCGILWBXDZ  984E BANDWIDTH.COM CLEC, LLC - IL 358   2020-10-31   

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

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