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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

OCN: 872K DIALWAVE, INC.

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
332-355 A New York City Zone 01 NY NYCMNYZRXDY  132   2026-06-01   
332-355 5 New York City Zone 01 NY NYCMNYZRXDY  132   2026-06-01   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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