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: 731

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-731 A Macomb IL MCMBILXDZMD  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 977      
309-731 0 Macomb IL   6265 UNITED STATES CELLULAR - IL 977   2025-02-11   
309-731 1 Macomb IL   6265 UNITED STATES CELLULAR - IL 977   2025-02-11   
309-731 4 Macomb IL MCMBILXDZMD  6115 LEVEL 3 COMMUNICATIONS, LLC - IL 977   2005-04-29   
309-731 8 Macomb IL   6265 UNITED STATES CELLULAR - IL 977   2025-02-11   
309-731 9 Macomb IL   6265 UNITED STATES CELLULAR - IL 977   2025-02-11   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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