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: 728

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
346-728 A Houston TX HSTNTXMCDS0  9533 SOUTHWESTERN BELL 560      
346-728 0 Houston TX HSTNTXMCDS0  9533 SOUTHWESTERN BELL 560   2014-07-01   
346-728 1 Houston TX HSTNTXMCDS0  9533 SOUTHWESTERN BELL 560   2014-07-01   
346-728 2 Houston TX HSTNTXMCDS0  9533 SOUTHWESTERN BELL 560   2014-07-01   
346-728 3 Houston TX HSTNTXMCDS0  9533 SOUTHWESTERN BELL 560   2014-07-01   
346-728 4 Houston TX HSTNTXMCDS0  9533 SOUTHWESTERN BELL 560   2014-07-01   
346-728 5 Houston TX HSTNTXMCDS0  9533 SOUTHWESTERN BELL 560   2014-07-01   
346-728 6 Houston TX HSTNTXMCDS0  9533 SOUTHWESTERN BELL 560   2014-07-01   
346-728 7 Houston TX HSTNTXMCDS0  9533 SOUTHWESTERN BELL 560   2014-07-01   
346-728 8 Houston TX HSTNTXMCDS0  9533 SOUTHWESTERN BELL 560   2014-07-01   
346-728 9 Houston TX HSTNTXMCDS0  9533 SOUTHWESTERN BELL 560   2014-07-01   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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