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: 337

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
309-337 A Galesburg IL GLBGILXDEMD  6265 UNITED STATES CELLULAR - IL 977      
309-337 0 Galesburg IL   6265 UNITED STATES CELLULAR - IL 977      
309-337 1 Galesburg IL   6265 UNITED STATES CELLULAR - IL 977      
309-337 2 Galesburg IL   6265 UNITED STATES CELLULAR - IL 977      
309-337 3 Galesburg IL   6265 UNITED STATES CELLULAR - IL 977      
309-337 4 Galesburg IL   6265 UNITED STATES CELLULAR - IL 977      
309-337 5 Galesburg IL   6265 UNITED STATES CELLULAR - IL 977      
309-337 6 Galesburg IL   6265 UNITED STATES CELLULAR - IL 977      
309-337 7 Galesburg IL   6265 UNITED STATES CELLULAR - IL 977      
309-337 8 Galesburg IL   6265 UNITED STATES CELLULAR - IL 977      
309-337 9 Galesburg IL   6265 UNITED STATES CELLULAR - IL 977      

Last updated: Sat, 21 Mar 2026 23:53:39 UTC

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