Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 309 [Rate centres in NPA 309] [Dial plan for NPA 309]

NXX: 574

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-574 A Aledo IL DVNPIAEAXMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 634      
309-574 0 Aledo IL DVNPIAEAXMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 634      
309-574 1 Aledo IL DVNPIADTUMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 634   2021-05-27   
309-574 3 Aledo IL RCISILRIWMD  846F MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 634   2010-04-15   
309-574 8 Aledo IL DVNPIAEAXMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 634   2025-04-24   
309-574 9 Aledo IL DVNPIAEAXMD  6333 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL 634   2019-11-05   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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