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: 332 [Rate centres in NPA 332] [Dial plan for NPA 332]

NXX: 231

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
332-231 A New York City Zone 01 NY NYCRNYBB2MD  0051 SHELCOMM 132      

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

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