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: 409 [Rate centres in NPA 409] [Dial plan for NPA 409]

NXX: 547

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
409-547 A Warren TX WRRNTXWRRS1  9533 SOUTHWESTERN BELL 562      
409-547 0 Warren TX WRRNTXWRRS1  9533 SOUTHWESTERN BELL 562      
409-547 1 Warren TX WRRNTXWRRS1  9533 SOUTHWESTERN BELL 562      
409-547 2 Warren TX WRRNTXWRRS1  9533 SOUTHWESTERN BELL 562      
409-547 3 Warren TX WRRNTXWRRS1  9533 SOUTHWESTERN BELL 562      
409-547 4 Warren TX BUMTTXTEX8X  903C ONVOY, LLC - TX 562   2014-08-22   
409-547 5 Warren TX   793K TWC IP ENABLED SERVICES, LLC 562   2022-07-31   
409-547 6 Warren TX BUMTTXATOMD  7138 TELEPORT COMMUNICATIONS AMERICA, LLC - TX 562   2013-07-08   
409-547 7 Warren TX BUMTTXTEX8X  903C ONVOY, LLC - TX 562   2020-08-31   
409-547 8 Warren TX BUMTTXTEX8X  903C ONVOY, LLC - TX 562   2020-08-31   
409-547 9 Warren TX BUMTTXTEXSX  073H TELNYX LLC 562   2021-04-09   

Last updated: Sat, 15 Nov 2025 03:38:44 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.