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: 247

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-247 A San Jose IL SNJSILSSRS0  9329 ILLINOIS BELL TEL CO 368      
309-247 1 San Jose IL PEORILPJXYX  224C ONVOY, LLC 368   2017-03-24   
309-247 2 San Jose IL PEORILPJX1Z  508J CENTURYLINK COMMUNICATIONS, LLC 368   2016-08-05   
309-247 3 San Jose IL SNJSILSSRS0  9329 ILLINOIS BELL TEL CO 368      
309-247 4 San Jose IL PEORILPJXMY  846F MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 368   2010-03-15   
309-247 5 San Jose IL   145J TERRA NOVA TELECOM INC. 368   2025-02-13   
309-247 7 San Jose IL PEORILPJDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 368   2015-11-02   
309-247 8 San Jose IL PEORILPJXYX  224C ONVOY, LLC 368   2018-07-15   
309-247 9 San Jose IL PEORILPJX3Z  073H TELNYX LLC 368   2018-07-20   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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