Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 872 [Rate centres in NPA 872] [Dial plan for NPA 872]

NXX: 393

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
872-393 A Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2026-05-30   
872-393 0 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2026-05-30   
872-393 1 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2026-05-30   
872-393 2 Chicago Zone 01-Calumet IL   224C ONVOY, LLC 358   2026-05-30   
872-393 3 Chicago Zone 01-Calumet IL   732J NUSO, LLC 358   2026-06-29   
872-393 8 Chicago Zone 01-Calumet IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2026-06-06   
872-393 9 Chicago Zone 01-Calumet IL   984E BANDWIDTH.COM CLEC, LLC - IL 358   2026-07-02   

Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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