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: 988

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-988 A Lacon IL PEORILPJXYX  224C ONVOY, LLC 368      
309-988 0 Lacon IL   073H TELNYX LLC 368   2020-07-13   
309-988 1 Lacon IL   624H ONVOY SPECTRUM, LLC 368   2024-05-13   
309-988 2 Lacon IL   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 368   2024-12-04   
309-988 3 Lacon IL   490J DISH WIRELESS, LLC 368   2023-11-04   
309-988 4 Lacon IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 368   2023-03-05   
309-988 5 Lacon IL   224C ONVOY, LLC 368   2021-02-26   
309-988 6 Lacon IL   145J TERRA NOVA TELECOM INC. 368   2026-02-05   
309-988 8 Lacon IL   965H FRACTEL, LLC 368   2020-08-07   
309-988 9 Lacon IL   145J TERRA NOVA TELECOM INC. 368   2025-06-01   

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

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