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: 737

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-737 A Rock Island IL DVNPIACL4MD  6265 UNITED STATES CELLULAR - IL 634      
309-737 0 Rock Island IL   6265 UNITED STATES CELLULAR - IL 634      
309-737 1 Rock Island IL   6265 UNITED STATES CELLULAR - IL 634      
309-737 2 Rock Island IL   6265 UNITED STATES CELLULAR - IL 634      
309-737 3 Rock Island IL   6265 UNITED STATES CELLULAR - IL 634      
309-737 4 Rock Island IL   6265 UNITED STATES CELLULAR - IL 634      
309-737 5 Rock Island IL   6265 UNITED STATES CELLULAR - IL 634      
309-737 6 Rock Island IL   6265 UNITED STATES CELLULAR - IL 634      
309-737 7 Rock Island IL   6265 UNITED STATES CELLULAR - IL 634      
309-737 8 Rock Island IL   6265 UNITED STATES CELLULAR - IL 634      
309-737 9 Rock Island IL   6265 UNITED STATES CELLULAR - IL 634      

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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