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: 443

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
430-443 A Collinsville TX SHMNTXXASMD  903C ONVOY, LLC - TX 552      
430-443 0 Collinsville TX DLLSTX97X1X  073H TELNYX LLC 552   2020-12-28   
430-443 1 Collinsville TX DLLSTX97X9X  516J TON80 COMMUNICATIONS, LLC 552   2021-11-13   
430-443 2 Collinsville TX SHMNTXXASMD  903C ONVOY, LLC - TX 552   2020-11-22   
430-443 3 Collinsville TX SHMNTXXASMD  903C ONVOY, LLC - TX 552   2020-11-22   
430-443 4 Collinsville TX DLLSTX97X6X  145J TERRA NOVA TELECOM INC. 552   2024-09-13   
430-443 5 Collinsville TX FTWOTXEDX1Z  7148 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 552   2022-01-26   
430-443 6 Collinsville TX SHMNTXXASMD  903C ONVOY, LLC - TX 552   2021-06-03   
430-443 7 Collinsville TX SHMNTXXASMD  903C ONVOY, LLC - TX 552   2021-06-03   
430-443 8 Collinsville TX DLLSTX97TMD  939H COMMIO, LLC 552   2021-09-17   
430-443 9 Collinsville TX DLLSTX97TMD  939H COMMIO, LLC 552   2021-09-17   

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.