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.

Switch: BYTWTXXAHMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
346-480 7 Crosby TX 903C ONVOY, LLC - TX 560      
346-663 A Highlands TX 903C ONVOY, LLC - TX 560      
346-663 0 Highlands TX 903C ONVOY, LLC - TX 560      
346-663 1 Highlands TX 903C ONVOY, LLC - TX 560      
346-663 2 Highlands TX 903C ONVOY, LLC - TX 560      
346-663 3 Highlands TX 903C ONVOY, LLC - TX 560      
346-663 4 Highlands TX 903C ONVOY, LLC - TX 560      
346-671 0 Baytown TX 903C ONVOY, LLC - TX 560      
346-734 0 Beach City TX 903C ONVOY, LLC - TX 560      
713-565 5 Huffman TX 903C ONVOY, LLC - TX 560      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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