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: CHCGILTCDS4

Remotes:

Switch Switch name Switch type
CHCGILTCRS1  CHICAGO  RS 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
312-284 A Chicago Zone 01-Franklin IL 7056 XO ILLINOIS, INC. 358      
312-284 0 Chicago Zone 01-Franklin IL 7056 XO ILLINOIS, INC. 358      
312-284 1 Chicago Zone 01-Franklin IL 7056 XO ILLINOIS, INC. 358      
312-284 2 Chicago Zone 01-Franklin IL 7056 XO ILLINOIS, INC. 358      
312-284 3 Chicago Zone 01-Franklin IL 7056 XO ILLINOIS, INC. 358      
312-284 4 Chicago Zone 01-Franklin IL 7056 XO ILLINOIS, INC. 358      
312-284 5 Chicago Zone 01-Franklin IL 7056 XO ILLINOIS, INC. 358      
312-284 6 Chicago Zone 01-Franklin IL 7056 XO ILLINOIS, INC. 358      
312-284 8 Chicago Zone 01-Franklin IL 7056 XO ILLINOIS, INC. 358      
331-334 0 Geneva IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358      
331-600 9 Wheaton IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358      
630-425 9 Geneva IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358      

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

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