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: 432 [Rate centres in NPA 432] [Dial plan for NPA 432]

NXX: 342

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
432-342 A Alpine TX   515J IP HORIZON LLC 542   2025-04-07   
432-342 1 Alpine TX   515J IP HORIZON LLC 542   2025-04-07   
432-342 2 Alpine TX   515J IP HORIZON LLC 542   2025-04-07   

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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