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: 470

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
346-470 A Humble TX HSTQTX02EMD  197D VONAGE AMERICA LLC 560      
346-470 0 Humble TX   624H ONVOY SPECTRUM, LLC 560   2021-11-13   
346-470 1 Humble TX   624H ONVOY SPECTRUM, LLC 560   2021-11-13   
346-470 2 Humble TX   197D VONAGE AMERICA LLC 560   2021-06-27   
346-470 3 Humble TX   7239 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - TX 560   2021-08-04   
346-470 4 Humble TX   624H ONVOY SPECTRUM, LLC 560   2021-07-09   
346-470 5 Humble TX   624H ONVOY SPECTRUM, LLC 560   2021-11-13   
346-470 6 Humble TX   624H ONVOY SPECTRUM, LLC 560   2021-11-13   
346-470 7 Humble TX   939H COMMIO, LLC 560   2021-10-16   
346-470 8 Humble TX   939H COMMIO, LLC 560   2021-10-16   
346-470 9 Humble TX   939H COMMIO, LLC 560   2021-10-16   

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

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