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: 326 [Rate centres in NPA 326] [Dial plan for NPA 326]

NXX: 221

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
326-221 A Belfast OH DYTNOH22X5Z  624H ONVOY SPECTRUM, LLC 328   2024-07-03   
326-221 0 Belfast OH DYTNOH22X5Z  624H ONVOY SPECTRUM, LLC 328   2024-07-03   
326-221 7 Belfast OH   114J EXIANT COMMUNICATIONS LLC 328   2026-09-26   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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