Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 730 [Rate centres in NPA 730] [Dial plan for NPA 730]

NXX: 236

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
730-236 A Troy IL STLVMOOH6MD  6529 T-MOBILE USA, INC. 520   2024-03-24   
730-236 0 Troy IL   624H ONVOY SPECTRUM, LLC 520   2025-01-04   
730-236 1 Troy IL   6529 T-MOBILE USA, INC. 520   2024-03-26   
730-236 8 Troy IL   063E PEERLESS NETWORK OF ILLINOIS, LLC - IL 520   2024-12-19   
730-236 9 Troy IL   6529 T-MOBILE USA, INC. 520   2024-03-24   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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