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: 389

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
872-389 A Chicago Zone 04-Humboldt IL   224C ONVOY, LLC 358   2025-11-23   
872-389 0 Chicago Zone 04-Humboldt IL   224C ONVOY, LLC 358   2025-11-23   
872-389 1 Chicago Zone 04-Humboldt IL   224C ONVOY, LLC 358   2025-11-23   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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