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.

Switch: BUMUTXHM9MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
409-306 A Beaumont TX 321J HD CARRIER LLC 562      
409-306 8 Beaumont TX 321J HD CARRIER LLC 562   2023-05-11   
409-306 9 Beaumont TX 321J HD CARRIER LLC 562   2023-05-11   
409-369 3 Port Arthur TX 321J HD CARRIER LLC 562   2026-07-02   
409-369 8 Port Arthur TX 321J HD CARRIER LLC 562   2026-07-02   
409-369 9 Port Arthur TX 321J HD CARRIER LLC 562   2026-07-02   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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