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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: CHCGILCLDS3

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
312-651 0 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-651 1 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-651 2 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-651 7 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-651 8 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-651 9 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-655 A Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-669 A Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-669 1 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-669 2 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-669 3 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-669 5 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-669 6 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-669 7 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-669 8 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-669 9 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-672 A Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-672 0 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-672 3 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-672 4 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-672 5 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-672 6 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-672 7 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-672 8 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-681 A Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-681 1 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-681 2 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-681 3 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-681 4 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-681 5 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-681 6 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-681 8 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-707 A Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-714 A Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-714 1 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-716 A Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-775 A Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-775 0 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-775 3 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-775 5 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-775 6 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-775 7 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-775 8 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-775 9 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-798 A Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-798 0 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-798 1 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-798 2 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-798 3 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      
312-798 4 Chicago Zone 01-Canal IL 9329 ILLINOIS BELL TEL CO 358      

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Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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