Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 447 [Rate centres in NPA 447] [Dial plan for NPA 447]

NXX: 438

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
447-438 A Springfield IL   883K AHOI LLC 374   2026-05-18   
447-438 4 Springfield IL   883K AHOI LLC 374   2026-05-18   

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

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