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: 641

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-641 A Morton IL PEORILSCX0X  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 368      
309-641 0 Morton IL   6115 LEVEL 3 COMMUNICATIONS, LLC - IL 368      
309-641 1 Morton IL   6529 T-MOBILE USA, INC. 368   2016-09-23   
309-641 2 Morton IL   6529 T-MOBILE USA, INC. 368   2021-09-02   
309-641 3 Morton IL   6529 T-MOBILE USA, INC. 368   2021-09-02   
309-641 4 Morton IL   6529 T-MOBILE USA, INC. 368   2021-09-02   
309-641 8 Morton IL   939H COMMIO, LLC 368   2022-10-23   
309-641 9 Morton IL   495J STRATUS NETWORKS 368   2020-08-03   

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

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