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: 290

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
447-290 A Effingham IL MTONILXCRMD  224C ONVOY, LLC 976   2024-05-04   
447-290 0 Effingham IL MTONILXCRMD  224C ONVOY, LLC 976   2024-05-04   
447-290 1 Effingham IL MTONILXCX0X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 976   2024-11-05   
447-290 8 Effingham IL MTONILXCX0X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 976   2024-12-19   
447-290 9 Effingham IL MTONILXCX0X  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 976   2024-12-19   

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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