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: 775

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-775 A Prairie City IL PRCYILXDRS1  1015 FRONTIER NORTH, INC. - IL 977      
309-775 0 Prairie City IL   593K MCC TELEPHONY LLC 977   2010-06-13   
309-775 1 Prairie City IL   1015 FRONTIER NORTH, INC. - IL 977      
309-775 2 Prairie City IL   224C ONVOY, LLC 977   2021-08-12   
309-775 3 Prairie City IL   624H ONVOY SPECTRUM, LLC 977   2023-07-29   
309-775 4 Prairie City IL   1015 FRONTIER NORTH, INC. - IL 977      
309-775 5 Prairie City IL   224C ONVOY, LLC 977   2021-04-09   
309-775 6 Prairie City IL   342F MTC COMMUNICATIONS, INC. - IL 977   2023-03-02   
309-775 7 Prairie City IL   508J CENTURYLINK COMMUNICATIONS, LLC 977   2014-07-29   
309-775 8 Prairie City IL   224C ONVOY, LLC 977   2020-03-13   
309-775 9 Prairie City IL   495J STRATUS NETWORKS 977   2021-02-28   

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

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