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: 250

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
430-250 A Grand Saline TX FTWOTXEDX1Z  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
430-250 0 Grand Saline TX DLLSTX97X9X  516J TON80 COMMUNICATIONS, LLC 552      
430-250 1 Grand Saline TX DLLSTXRIXIY  583C TIME WARNER CBLE INFO SVC (TX) DBA TIME WARNER CBL 552      
430-250 5 Grand Saline TX DLLATX37DS6  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 552      
430-250 6 Grand Saline TX FTWOTXEDX1Z  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552      
430-250 8 Grand Saline TX   624H ONVOY SPECTRUM, LLC 552      

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.