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: 425

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-425 A Fiatt IL PEORILPJXOY  516C AT&T CORP. 368      
309-425 0 Fiatt IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 368   2015-01-10   
309-425 1 Fiatt IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 368   2015-11-01   
309-425 2 Fiatt IL   224C ONVOY, LLC 368   2017-03-24   
309-425 3 Fiatt IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 368   2020-06-08   
309-425 4 Fiatt IL   224C ONVOY, LLC 368   2021-02-26   
309-425 5 Fiatt IL   624H ONVOY SPECTRUM, LLC 368   2024-05-11   
309-425 6 Fiatt IL   508J CENTURYLINK COMMUNICATIONS, LLC 368   2016-08-10   
309-425 7 Fiatt IL   516C AT&T CORP. 368   2012-04-16   
309-425 8 Fiatt IL   073H TELNYX LLC 368   2018-08-03   
309-425 9 Fiatt IL   495J STRATUS NETWORKS 368   2020-08-03   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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