Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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Switch: FRFTILFBDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
708-720 A Frankfort IL 9329 ILLINOIS BELL TEL CO 358      
815-464 A Frankfort IL 9329 ILLINOIS BELL TEL CO 358      
815-469 A Frankfort IL 9329 ILLINOIS BELL TEL CO 358      
815-806 A Frankfort IL 9329 ILLINOIS BELL TEL CO 358      
815-806 0 Frankfort IL 9329 ILLINOIS BELL TEL CO 358      
815-806 1 Frankfort IL 9329 ILLINOIS BELL TEL CO 358      
815-806 2 Frankfort IL 9329 ILLINOIS BELL TEL CO 358      
815-806 3 Frankfort IL 9329 ILLINOIS BELL TEL CO 358      
815-806 4 Frankfort IL 9329 ILLINOIS BELL TEL CO 358      
815-806 8 Frankfort IL 9329 ILLINOIS BELL TEL CO 358      
815-806 9 Frankfort IL 9329 ILLINOIS BELL TEL CO 358      

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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