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: 343

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
430-343 A Celeste TX DLLSTXALDS4  903C ONVOY, LLC - TX 552      
430-343 0 Celeste TX DLLSTX97X1X  073H TELNYX LLC 552   2020-12-28   
430-343 1 Celeste TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2021-02-03   
430-343 2 Celeste TX DLLSTXALDS4  903C ONVOY, LLC - TX 552   2021-02-03   
430-343 3 Celeste TX DLLSTX97X6X  145J TERRA NOVA TELECOM INC. 552   2024-09-13   
430-343 4 Celeste TX DLLSTXTAXTZ  624H ONVOY SPECTRUM, LLC 552   2024-05-04   
430-343 5 Celeste TX   793K TWC IP ENABLED SERVICES, LLC 552   2022-01-16   
430-343 8 Celeste TX DLLSTX97X9X  516J TON80 COMMUNICATIONS, LLC 552   2021-10-16   
430-343 9 Celeste TX DLLSTX97DSS  177F PEERLESS NETWORK OF TEXAS, LLC - TX 552   2024-03-09   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.