Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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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 5   624H ONVOY SPECTRUM, LLC 520   2025-01-04   
730-231 6   490J DISH WIRELESS, LLC 520   2024-10-14   
730-231 7   490J DISH WIRELESS, LLC 520   2025-02-28   
730-231 8   6529 T-MOBILE USA, INC. 520   2024-03-10   
730-231 9   6529 T-MOBILE USA, INC. 520   2024-03-10   

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Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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