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: 220

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-220 A Washburn IL PEORILTCDS0  5800 ITV-3, LLC D/B/A I3 BROADBAND 368      
309-220 0 Washburn IL   145J TERRA NOVA TELECOM INC. 368   2025-12-29   
309-220 1 Washburn IL   846F MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 368   2010-03-15   
309-220 2 Washburn IL   224C ONVOY, LLC 368   2018-08-02   
309-220 3 Washburn IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 368   2019-05-18   
309-220 4 Washburn IL   224C ONVOY, LLC 368   2021-02-26   
309-220 5 Washburn IL   224C ONVOY, LLC 368   2020-08-15   
309-220 6 Washburn IL   224C ONVOY, LLC 368   2020-08-15   
309-220 7 Washburn IL   224C ONVOY, LLC 368   2021-07-22   
309-220 8 Washburn IL   984E BANDWIDTH.COM CLEC, LLC - IL 368   2020-09-17   
309-220 9 Washburn IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 368   2015-11-05   

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

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