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: 637

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
346-637 A Katy TX HSTNTXJAXGY  516J TON80 COMMUNICATIONS, LLC 560      
346-637 0 Katy TX HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2022-12-23   
346-637 1 Katy TX KATYTXXA9MD  903C ONVOY, LLC - TX 560   2022-12-12   
346-637 2 Katy TX KATYTXXA9MD  903C ONVOY, LLC - TX 560   2022-04-01   
346-637 3 Katy TX KATYTXXA9MD  903C ONVOY, LLC - TX 560   2022-04-01   
346-637 4 Katy TX KATYTXXA9MD  903C ONVOY, LLC - TX 560   2022-04-01   
346-637 5 Katy TX KATYTXXA9MD  903C ONVOY, LLC - TX 560   2022-12-12   
346-637 6 Katy TX KATYTXXA9MD  903C ONVOY, LLC - TX 560   2022-12-12   
346-637 7 Katy TX HSTNTXJAXGY  516J TON80 COMMUNICATIONS, LLC 560   2022-03-17   
346-637 8 Katy TX HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2022-12-23   
346-637 9 Katy TX HSTNTX01GT5  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 560   2022-12-23   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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