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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Chicago Zone 07-Hyde Park, IL

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
773-947 7 CHCGILDODS0  9329 ILLINOIS BELL TEL CO 358      
773-947 8 CHCGILDODS0  9329 ILLINOIS BELL TEL CO 358      
773-947 9 CHCGILDODS0  9329 ILLINOIS BELL TEL CO 358      
773-955 A CHCGILDODS0  9329 ILLINOIS BELL TEL CO 358      
773-955 0 CHCGILDODS0  9329 ILLINOIS BELL TEL CO 358      
773-955 1 CHCGILDODS0  9329 ILLINOIS BELL TEL CO 358      
773-955 2 CHCGILDODS0  9329 ILLINOIS BELL TEL CO 358      
773-955 3 CHCGILDODS0  9329 ILLINOIS BELL TEL CO 358      
773-955 4 CHCGILDODS0  9329 ILLINOIS BELL TEL CO 358      
773-955 5 CHCGILDODS0  9329 ILLINOIS BELL TEL CO 358      
773-955 6 CHCGILDODS0  9329 ILLINOIS BELL TEL CO 358      
773-955 7 CHCGILDODS0  9329 ILLINOIS BELL TEL CO 358      
773-955 8 ELGNILOT0MD  6529 T-MOBILE USA, INC. 358      
773-955 9 CHCGILDODS0  9329 ILLINOIS BELL TEL CO 358      

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Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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