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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Switch: GNBONCEU24Z

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
336-944 A Greensboro NC 638E ONVOY, LLC - NC 424   2008-05-09   

Last updated: Sun, 31 May 2020 11:59:01 UTC

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