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: 817 [Rate centres in NPA 817] [Dial plan for NPA 817]

NXX: 512

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
817-512 A Cresson EMS TX CRSNTXXARS0  2153 TEXAS WINDSTREAM, LLC 552      
817-512 0 Cresson EMS TX CRSNTXXARS0  2153 TEXAS WINDSTREAM, LLC 552      
817-512 1 Cresson EMS TX DLLSTXALDS4  903C ONVOY, LLC - TX 552      
817-512 2 Cresson EMS TX DLLSTXALDS4  903C ONVOY, LLC - TX 552      
817-512 3 Cresson EMS TX CRSNTXXARS0  2153 TEXAS WINDSTREAM, LLC 552      
817-512 4 Cresson EMS TX CRSNTXXARS0  2153 TEXAS WINDSTREAM, LLC 552      
817-512 5 Cresson EMS TX DLLSTXALDS4  903C ONVOY, LLC - TX 552      
817-512 6 Cresson EMS TX DLLSTXTAXTZ  624H ONVOY SPECTRUM, LLC 552      
817-512 7 Cresson EMS TX DLLSTXALDS4  903C ONVOY, LLC - TX 552      
817-512 8 Cresson EMS TX DLLSTXALDS4  903C ONVOY, LLC - TX 552      
817-512 9 Cresson EMS TX DLLSTXALDS4  903C ONVOY, LLC - TX 552      

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.