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: 742

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
430-742 A Cayuga TX DLLSTX97X9X  516J TON80 COMMUNICATIONS, LLC 552      
430-742 0 Cayuga TX ATHNTXXATMD  903C ONVOY, LLC - TX 552   2023-09-18   
430-742 1 Cayuga TX DLLSTXRIXIY  583C TIME WARNER CBLE INFO SVC (TX) DBA TIME WARNER CBL 552   2023-06-11   
430-742 6 Cayuga TX DLLSTX97X9X  516J TON80 COMMUNICATIONS, LLC 552   2022-04-01   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: BeeVox - Whitelabel Reseller Platform

Like this site? We accept donations via PayPal.