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: 437

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
447-437 A Basco IL MCMBILXDX9X  224C ONVOY, LLC 977      
447-437 0 Basco IL MCMBILAABMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 977   2021-06-13   
447-437 3 Basco IL MCMBILXDX5X  624H ONVOY SPECTRUM, LLC 977   2023-07-29   
447-437 4 Basco IL MCMBILXDX9X  224C ONVOY, LLC 977   2023-01-07   
447-437 7 Basco IL MCMBILXDX9X  224C ONVOY, LLC 977   2021-07-05   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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