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: 560

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-560 A Colfax IL BLTNILXDX0X  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 366      
309-560 0 Colfax IL BLTNILXDX1Y  073H TELNYX LLC 366   2020-06-26   
309-560 1 Colfax IL BLTNILTSYMD  495J STRATUS NETWORKS 366   2020-10-14   
309-560 3 Colfax IL BLTNILXDXHY  624H ONVOY SPECTRUM, LLC 366   2023-06-02   
309-560 5 Colfax IL BLTNILXDXMX  224C ONVOY, LLC 366   2021-02-26   
309-560 6 Colfax IL BLTNILXDX0X  7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 366   2020-03-22   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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