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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East St Louis, IL

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
730-231 6 STLSMOGZ00Z  490J DISH WIRELESS, LLC 520   2024-10-14   
730-231 7 STLSMOGZ00Z  490J DISH WIRELESS, LLC 520   2025-02-28   
730-231 8 STLVMOOH6MD  6529 T-MOBILE USA, INC. 520   2024-03-10   
730-231 9 STLVMOOH6MD  6529 T-MOBILE USA, INC. 520   2024-03-10   

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Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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