Local Calling Guide

Area code/prefix search

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NPA: 309 [Rate centres in NPA 309] [Dial plan for NPA 309]

NXX: 866

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-866 A Morton IL MRTNILXDDS2  1015 FRONTIER NORTH, INC. - IL 368      
309-866 0 Morton IL MRTNILXDDS2  1015 FRONTIER NORTH, INC. - IL 368      
309-866 1 Morton IL PEORILPJXMZ  624H ONVOY SPECTRUM, LLC 368   2024-05-13   
309-866 3 Morton IL PEORILPJX2Y  7196 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL 368   2014-04-01   
309-866 6 Morton IL PEORILPJXYX  224C ONVOY, LLC 368   2018-01-11   
309-866 7 Morton IL PEORILPJXYX  224C ONVOY, LLC 368   2020-08-15   
309-866 8 Morton IL PEORILPJXYX  224C ONVOY, LLC 368   2020-08-15   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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