Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 346 [Rate centres in NPA 346] [Dial plan for NPA 346]

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
346-998 6 Houston TX HSTNTXJAXLX  177F PEERLESS NETWORK OF TEXAS, LLC - TX 560   2016-12-10   
346-998 7 Houston TX HSTNTXJAXLX  177F PEERLESS NETWORK OF TEXAS, LLC - TX 560   2016-12-10   
346-998 8 Houston TX HSTNTXJAXLX  177F PEERLESS NETWORK OF TEXAS, LLC - TX 560   2016-12-10   
346-998 9 Houston TX HSTNTXJAXLX  177F PEERLESS NETWORK OF TEXAS, LLC - TX 560   2016-12-10   
346-999 A Huffman TX HSTNTXJADS6  319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 560      
346-999 0 Huffman TX BYTWTXXAHMD  903C ONVOY, LLC - TX 560   2020-08-22   
346-999 1 Huffman TX HSTNTXJAXLX  177F PEERLESS NETWORK OF TEXAS, LLC - TX 560   2018-12-27   
346-999 2 Huffman TX BYTWTXXAHMD  903C ONVOY, LLC - TX 560   2019-02-18   
346-999 3 Huffman TX HSTNTXJAXBY  965H FRACTEL, LLC 560   2020-07-19   
346-999 4 Huffman TX HSTNTXJAXBY  965H FRACTEL, LLC 560   2020-07-19   
346-999 5 Huffman TX HSTNTXJAXBY  965H FRACTEL, LLC 560   2020-07-19   
346-999 6 Huffman TX BYTWTXXAHMD  903C ONVOY, LLC - TX 560   2016-01-29   
346-999 7 Huffman TX HSTSTXJV6MD  508J CENTURYLINK COMMUNICATIONS, LLC 560   2015-05-21   
346-999 8 Huffman TX BYTWTXXAHMD  903C ONVOY, LLC - TX 560   2020-08-22   
346-999 9 Huffman TX HSTNTXJADS6  319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 560   2014-07-01   

<< 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.