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: 851

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
346-851 A Katy TX   903C ONVOY, LLC - TX 560   2025-03-02   
346-851 0 Katy TX   903C ONVOY, LLC - TX 560   2025-03-02   
346-851 1 Katy TX   903C ONVOY, LLC - TX 560   2025-07-19   
346-851 2 Katy TX   903C ONVOY, LLC - TX 560   2025-09-07   
346-851 3 Katy TX   903C ONVOY, LLC - TX 560   2025-09-07   
346-851 4 Katy TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2025-09-26   
346-851 5 Katy TX   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2025-09-26   
346-851 6 Katy TX   516C AT&T CORP. 560   2025-10-24   
346-851 7 Katy TX   903C ONVOY, LLC - TX 560   2025-10-26   

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

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