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

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
409-999 9 Port Arthur TX BUMTTXTEDS4  319D FOREMOST TELECOMMUNICATIONS CORPORATION - TX 562   2013-12-07   

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Last updated: Sun, 17 May 2026 03:26:51 UTC

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