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 8 STLVMOOH6MD  6529 T-MOBILE USA, INC. 520   2024-03-10   
730-231 9 STLVMOOH6MD  6529 T-MOBILE USA, INC. 520   2024-03-10   
730-292 A   224C ONVOY, LLC 520   2026-03-20   
730-292 0   224C ONVOY, LLC 520   2026-03-20   

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Last updated: Sun, 17 May 2026 03:26:51 UTC

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