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: 598

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-598 A Kirkwood IL MCMBILXDZMD  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 977      
309-598 0 Kirkwood IL MCMBILXDZMD  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 977      
309-598 1 Kirkwood IL MCMBILXDX9X  224C ONVOY, LLC 977   2020-03-13   
309-598 2 Kirkwood IL MCMBILXDZMD  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 977   2019-07-08   
309-598 3 Kirkwood IL MCMBILXDX9X  224C ONVOY, LLC 977   2021-07-05   
309-598 5 Kirkwood IL CLCHILXDDS2  342F MTC COMMUNICATIONS, INC. - IL 977   2022-04-17   
309-598 6 Kirkwood IL MCMBILXDX5X  624H ONVOY SPECTRUM, LLC 977   2023-07-29   
309-598 7 Kirkwood IL GLBGILXDAMD  508J CENTURYLINK COMMUNICATIONS, LLC 977   2014-07-29   
309-598 8 Kirkwood IL GLBGILXDXMD  495J STRATUS NETWORKS 977   2021-02-28   
309-598 9 Kirkwood IL MCMBILXDX9X  224C ONVOY, LLC 977   2021-04-09   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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