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: 737

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
730-737 A Chesterfield-Rockbridge IL   624H ONVOY SPECTRUM, LLC 520   2025-03-02   
730-737 0 Chesterfield-Rockbridge IL   624H ONVOY SPECTRUM, LLC 520   2025-03-02   
730-737 7 Chesterfield-Rockbridge IL   145J TERRA NOVA TELECOM INC. 520   2025-06-01   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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