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: CHCGILCLDS7

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
219-655 A Whiting IN 7314 TELEPORT COMMUNICATIONS AMERICA, LLC - IN 358      
312-549 A Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-596 A Chicago Zone 01-Canal IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
312-843 A Chicago Zone 01-Calumet IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
630-412 A Bensenville IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
630-423 A Aurora IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
630-425 A Geneva IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
630-490 A La Grange IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
630-519 A Lombard IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
630-755 A Lemont IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
630-912 A Roselle IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
708-898 A Chicago Heights IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
708-907 A Oak Lawn IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
773-644 A Chicago Zone 02-Edgewater IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
815-526 A Crystal Lake IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
815-527 A Woodstock IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
815-528 A McHenry IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
847-231 A Grayslake IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
847-379 A Zion IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
847-629 A Fox Lake IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      
872-241 A Chicago Zone 02-Edgewater IL 7136 TELEPORT COMMUNICATIONS AMERICA, LLC - IL 358      

Last updated: Fri, 01 Jul 2022 02:53:40 UTC

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