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: 430 [Rate centres in NPA 430] [Dial plan for NPA 430]

NXX: 256

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
430-256 A Caddo Mills TX DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552      
430-256 0 Caddo Mills TX DLLSTX37XWZ  004F BANDWIDTH.COM CLEC, LLC - TX 552      
430-256 1 Caddo Mills TX DLLSTX97X1X  073H TELNYX LLC 552      
430-256 2 Caddo Mills TX DLLSTX97X9X  516J TON80 COMMUNICATIONS, LLC 552      
430-256 3 Caddo Mills TX DLLSTXALDS4  903C ONVOY, LLC - TX 552      
430-256 5 Caddo Mills TX DLLSTXALDS4  903C ONVOY, LLC - TX 552      
430-256 6 Caddo Mills TX DLLSTX97XGX  490J DISH WIRELESS, LLC 552      
430-256 7 Caddo Mills TX   624H ONVOY SPECTRUM, LLC 552      
430-256 8 Caddo Mills TX DLLSTXALDS4  903C ONVOY, LLC - TX 552      
430-256 9 Caddo Mills TX DLLSTX97DSS  177F PEERLESS NETWORK OF TEXAS, 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.