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: 343

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
872-343 A Chicago Zone 07-Stewart IL CHCGILWUTMD  516J TON80 COMMUNICATIONS, LLC 358      
872-343 7 Chicago Zone 07-Stewart IL CHCGILWUTMD  516J TON80 COMMUNICATIONS, LLC 358   2022-03-30   
872-343 9 Chicago Zone 07-Stewart IL   6529 T-MOBILE USA, INC. 358   2022-06-23   

Last updated: Sun, 17 May 2026 03:26:51 UTC

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