Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 346 [Rate centres in NPA 346] [Dial plan for NPA 346]

NXX: 596

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
346-596 A Humble TX HSTNTXMOX6X  624H ONVOY SPECTRUM, LLC 560      
346-596 0 Humble TX   624H ONVOY SPECTRUM, LLC 560   2022-12-17   
346-596 1 Humble TX   624H ONVOY SPECTRUM, LLC 560   2022-12-17   
346-596 2 Humble TX   624H ONVOY SPECTRUM, LLC 560   2022-12-17   
346-596 3 Humble TX   624H ONVOY SPECTRUM, LLC 560   2022-12-17   
346-596 4 Humble TX   624H ONVOY SPECTRUM, LLC 560   2022-12-17   
346-596 5 Humble TX   624H ONVOY SPECTRUM, LLC 560   2022-12-17   
346-596 6 Humble TX   624H ONVOY SPECTRUM, LLC 560   2022-12-17   
346-596 7 Humble TX   624H ONVOY SPECTRUM, LLC 560   2022-12-17   
346-596 8 Humble TX   624H ONVOY SPECTRUM, LLC 560   2022-12-17   
346-596 9 Humble TX   624H ONVOY SPECTRUM, LLC 560   2022-12-17   

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

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