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: 900

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
872-900 A Chicago Zone 05-Austin IL   224C ONVOY, LLC 358   2026-02-17   
872-900 0 Chicago Zone 05-Austin IL   224C ONVOY, LLC 358   2026-02-17   
872-900 1 Chicago Zone 05-Austin IL   224C ONVOY, LLC 358   2026-02-18   
872-900 9 Chicago Zone 05-Austin IL   224C ONVOY, LLC 358   2026-02-17   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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