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: CHCGILWUX5X

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
773-200 A Chicago Zone 02-Edgewater IL 598J FIVE9, INC. 358      
773-200 0 Chicago Zone 02-Edgewater IL 598J FIVE9, INC. 358   2023-07-02   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

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