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: 347

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
872-347 A Chicago Zone 01-Calumet IL DRTPILAA0MD  0051 SHELCOMM 358   2024-02-09   

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

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