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: 608

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-608 A San Jose IL PEORILPJXDY  984E BANDWIDTH.COM CLEC, LLC - IL 368      
309-608 0 San Jose IL   984E BANDWIDTH.COM CLEC, LLC - IL 368   2020-05-16   
309-608 1 San Jose IL   495J STRATUS NETWORKS 368   2020-08-03   
309-608 2 San Jose IL   224C ONVOY, LLC 368   2020-05-22   
309-608 3 San Jose IL   224C ONVOY, LLC 368   2020-05-22   
309-608 4 San Jose IL   224C ONVOY, LLC 368   2020-05-22   
309-608 5 San Jose IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 368   2020-12-19   
309-608 6 San Jose IL   073H TELNYX LLC 368   2023-04-13   
309-608 8 San Jose IL   224C ONVOY, LLC 368   2021-02-12   
309-608 9 San Jose IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 368   2021-02-21   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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