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: 474

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-474 A Varna IL PEORILTCDS0  5800 ITV-3, LLC D/B/A I3 BROADBAND 368      
309-474 1 Varna IL   495J STRATUS NETWORKS 368   2020-08-03   
309-474 2 Varna IL   224C ONVOY, LLC 368   2021-02-12   
309-474 4 Varna IL   224C ONVOY, LLC 368   2021-04-03   
309-474 7 Varna IL   224C ONVOY, LLC 368   2018-08-02   
309-474 8 Varna IL   624H ONVOY SPECTRUM, LLC 368   2024-05-13   

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

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