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: 458 [Rate centres in NPA 458] [Dial plan for NPA 458]

NXX: 433

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
458-433 A Vale OR BOISIDPZ0MD  516J TON80 COMMUNICATIONS, LLC 652      
458-433 4 Vale OR   145J TERRA NOVA TELECOM INC. 652   2025-04-09   
458-433 6 Vale OR BOISIDPZ0MD  516J TON80 COMMUNICATIONS, LLC 652   2022-03-31   
458-433 7 Vale OR BOISIDMAX2X  3234 LEVEL 3 COMMUNICATIONS, LLC - OR 652   2023-02-20   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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