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: 257

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
409-257 A Beaumont TX BUMTTXTEY0X  425J CSC WIRELESS, LLC 562      
409-257 0 Beaumont TX BUMTTX14IMD  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 562   2020-11-08   
409-257 1 Beaumont TX BUMTTX14IMD  6114 LEVEL 3 COMMUNICATIONS, LLC - TX 562   2020-11-08   
409-257 2 Beaumont TX BUMTTXTEY0X  425J CSC WIRELESS, LLC 562   2020-08-03   
409-257 3 Beaumont TX BUMTTXTEX8X  903C ONVOY, LLC - TX 562   2021-11-25   
409-257 4 Beaumont TX BUMTTXTEX8X  903C ONVOY, LLC - TX 562   2021-11-25   
409-257 5 Beaumont TX BUMTTXTEX8X  903C ONVOY, LLC - TX 562   2021-11-25   
409-257 6 Beaumont TX BUMTTXTEX8X  903C ONVOY, LLC - TX 562   2020-12-03   
409-257 7 Beaumont TX BUMTTXTEX8X  903C ONVOY, LLC - TX 562   2020-12-03   
409-257 8 Beaumont TX BUMTTXTEX8X  903C ONVOY, LLC - TX 562   2020-12-03   
409-257 9 Beaumont TX BUMTTXTEX8X  903C ONVOY, LLC - TX 562   2020-12-03   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.