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: CHCGILHBDS1

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
773-227 A Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-235 A Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-252 A Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-269 2 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358   2002-03-25   
773-276 A Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-278 A Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-289 3 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358   2001-06-02   
773-289 4 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358   2001-06-02   
773-292 A Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-328 7 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358   2001-09-10   
773-342 A Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-384 A Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-394 A Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-394 5 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-394 6 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-394 7 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-394 8 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-395 A Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-395 0 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-395 2 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-395 3 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-395 4 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-395 5 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-395 6 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-395 7 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-395 8 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-395 9 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-486 A Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-489 A Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-645 A Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-645 2 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-645 5 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-645 7 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-645 8 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-772 A Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-782 A Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-782 2 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-782 3 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-782 4 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-782 8 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-862 A Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-862 0 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-862 1 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-862 2 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-862 3 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-862 4 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-862 6 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      
773-862 9 Chicago Zone 04-Humboldt IL 9329 ILLINOIS BELL TEL CO 358      

Last updated: Fri, 23 Jul 2021 12:43:22 UTC

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