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: 320

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
447-320 A Oakford IL   145J TERRA NOVA TELECOM INC. 374      
447-320 0 Oakford IL   145J TERRA NOVA TELECOM INC. 374   2025-10-06   

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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