Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Switch: CHCGILWUDS4

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
312-800 0 Chicago Zone 01-Calumet IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-01-11   
312-800 8 Chicago Zone 01-Calumet IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-01-11   
312-800 9 Chicago Zone 01-Calumet IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-01-30   
312-837 0 Chicago Zone 01-Calumet IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2015-10-19   
312-878 A Chicago Zone 01-Calumet IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358      
312-878 0 Chicago Zone 01-Calumet IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2008-05-10   
312-878 3 Chicago Zone 01-Calumet IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2008-03-27   
312-878 4 Chicago Zone 01-Calumet IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2008-03-27   
312-878 5 Chicago Zone 01-Calumet IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2008-03-27   
312-878 6 Chicago Zone 01-Calumet IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2008-03-27   
312-878 9 Chicago Zone 01-Calumet IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2008-05-10   
312-900 9 Chicago Zone 01-Calumet IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2019-05-18   
312-940 A Chicago Zone 01-Calumet IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358      
312-940 0 Chicago Zone 01-Calumet IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-11-11   
312-940 1 Chicago Zone 01-Calumet IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-11-11   
312-940 2 Chicago Zone 01-Calumet IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-11-11   
312-940 3 Chicago Zone 01-Calumet IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-11-11   
312-940 4 Chicago Zone 01-Calumet IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-11-11   
312-940 5 Chicago Zone 01-Calumet IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-11-11   
312-940 6 Chicago Zone 01-Calumet IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-11-11   
312-940 7 Chicago Zone 01-Calumet IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-11-11   
312-940 8 Chicago Zone 01-Calumet IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-11-11   
312-940 9 Chicago Zone 01-Calumet IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-11-11   
331-200 7 Bartlett IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-04-27   
331-200 8 Bartlett IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-04-27   
331-207 1 Yorkville IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-04-27   
331-207 9 Yorkville IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-04-27   
331-210 A Geneva IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358      
331-210 5 Geneva IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2012-04-27   
331-210 9 Geneva IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-10-25   
331-212 8 Aurora IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-04-27   
331-212 9 Aurora IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-04-27   
331-215 8 Naperville IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-04-27   
331-215 9 Naperville IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-04-27   
331-216 0 Oswego IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-04-27   
331-216 1 Oswego IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2013-04-27   
331-223 9 Geneva IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2011-10-27   
331-224 6 Bensenville IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2024-09-27   
331-224 7 Bensenville IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2024-06-20   
331-224 9 Bensenville IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2023-08-08   
331-228 2 Geneva IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2012-05-04   
331-228 3 Geneva IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2012-05-04   
331-228 4 Geneva IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2012-05-04   
331-228 5 Geneva IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2012-05-04   
331-231 2 Naperville IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2018-10-29   
331-235 9 Geneva IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2018-11-08   
331-236 1 Wheaton IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2018-12-14   
331-238 7 Downers Grove IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2020-02-26   
331-239 9 Yorkville IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358   2018-11-24   
331-240 A West Chicago IL 063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 358      

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Last updated: Wed, 04 Mar 2026 03:00:52 UTC

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