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: 925

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-925 A Tremont IL TRMTILXDRS0  1015 FRONTIER NORTH, INC. - IL 368      
309-925 0 Tremont IL PEORILPJDS4  063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 368   2015-11-02   
309-925 1 Tremont IL PEORILPJXYX  224C ONVOY, LLC 368   2019-07-15   
309-925 2 Tremont IL TRMTILXDRS0  1015 FRONTIER NORTH, INC. - IL 368      
309-925 3 Tremont IL TRMTILXDRS0  1015 FRONTIER NORTH, INC. - IL 368      
309-925 4 Tremont IL TRMTILXDRS0  1015 FRONTIER NORTH, INC. - IL 368      
309-925 5 Tremont IL TRMTILXDRS0  1015 FRONTIER NORTH, INC. - IL 368      
309-925 7 Tremont IL TRMTILXDRS0  1015 FRONTIER NORTH, INC. - IL 368      
309-925 8 Tremont IL PEORILPJX8Z  073H TELNYX LLC 368   2020-07-20   
309-925 9 Tremont IL TRMTILXDRS0  1015 FRONTIER NORTH, INC. - IL 368      

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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