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: 354

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-354 A Mackinaw IL   224C ONVOY, LLC 368      
309-354 1 Mackinaw IL PEORILPJXMY  846F MEDIACOM TELEPHONY OF ILLINOIS, LLC - IL 368   2010-03-15   
309-354 2 Mackinaw IL PEORILPJXYX  224C ONVOY, LLC 368   2021-04-03   
309-354 3 Mackinaw IL PEORILPJXYX  224C ONVOY, LLC 368   2018-08-02   
309-354 4 Mackinaw IL PEORILSCX0X  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 368   2004-07-17   
309-354 6 Mackinaw IL PEORILPJXYX  224C ONVOY, LLC 368   2021-02-12   
309-354 7 Mackinaw IL PEORILPJX1Z  508J CENTURYLINK COMMUNICATIONS, LLC 368   2016-08-04   
309-354 8 Mackinaw IL PEORILPJXRZ  495J STRATUS NETWORKS 368   2020-08-03   
309-354 9 Mackinaw IL PEORILPJDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 368   2015-11-02   

Last updated: Sun, 17 May 2026 03:26:51 UTC

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