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: 945 [Rate centres in NPA 945] [Dial plan for NPA 945]

NXX: 221

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
945-221 A Dallas TX FTWOTXEDX1Z  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
945-221 0 Dallas TX DLLSTXTAXTZ  624H ONVOY SPECTRUM, LLC 552      
945-221 1 Dallas TX FTWOTXEDX1Z  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
945-221 2 Dallas TX FTWOTXEDX1Z  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
945-221 3 Dallas TX FTWOTXEDX1Z  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
945-221 4 Dallas TX FTWOTXEDX1Z  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
945-221 5 Dallas TX DLLSTXALDS4  903C ONVOY, LLC - TX 552      
945-221 6 Dallas TX DLLSTXALDS4  903C ONVOY, LLC - TX 552      
945-221 7 Dallas TX DLLSTXALDS4  903C ONVOY, LLC - TX 552      
945-221 8 Dallas TX DLLSTXTAXTZ  624H ONVOY SPECTRUM, LLC 552      
945-221 9 Dallas TX DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.