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: CHCGILOKDS0

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
773-268 A Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-285 A Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-285 0 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-285 1 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-285 2 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-285 3 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-285 4 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-285 5 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-285 7 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-285 8 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-285 9 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-373 A Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-373 2 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-373 3 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-373 4 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-373 6 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-373 7 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-373 8 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-451 A Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-451 0 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-451 1 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-451 2 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-451 3 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-451 4 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-536 A Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-536 0 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-536 2 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-536 3 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-536 5 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-536 8 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-538 A Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-538 0 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-538 1 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-538 2 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-538 4 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-538 5 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-538 8 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-538 9 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-548 A Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-548 1 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-548 3 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-548 4 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-548 5 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-548 6 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-548 7 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-548 8 Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-624 A Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      
773-924 A Chicago Zone 07-Oakland IL 9329 ILLINOIS BELL TEL CO 358      

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

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