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: 790

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
817-790 A Alvarado EMS TX ALVDTXTIRS0  9533 SOUTHWESTERN BELL 552      
817-790 0 Alvarado EMS TX ALVDTXTIRS0  9533 SOUTHWESTERN BELL 552      
817-790 1 Alvarado EMS TX DLLSTXALDS4  903C ONVOY, LLC - TX 552      
817-790 2 Alvarado EMS TX ALVDTXTIRS0  9533 SOUTHWESTERN BELL 552      
817-790 3 Alvarado EMS TX ALVDTXTIRS0  9533 SOUTHWESTERN BELL 552      
817-790 4 Alvarado EMS TX DLLSTXALDS4  903C ONVOY, LLC - TX 552      
817-790 5 Alvarado EMS TX ALVDTXTIRS0  9533 SOUTHWESTERN BELL 552      
817-790 6 Alvarado EMS TX ALVDTXTIRS0  9533 SOUTHWESTERN BELL 552      
817-790 7 Alvarado EMS TX ALVDTXTIRS0  9533 SOUTHWESTERN BELL 552      
817-790 8 Alvarado EMS TX ALVDTXTIRS0  9533 SOUTHWESTERN BELL 552      
817-790 9 Alvarado EMS TX DLLSTXALDS4  903C ONVOY, LLC - TX 552      

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

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.