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: 225 [Rate centres in NPA 225] [Dial plan for NPA 225]

NXX: 576

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
225-576 A Baton Rouge LA   653C TELEPORT COMMUNICATIONS AMERICA LA - LLC 492   2025-09-19   
225-576 6 Baton Rouge LA   653C TELEPORT COMMUNICATIONS AMERICA LA - LLC 492   2025-09-19   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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