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: CLMASCSNXSY

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
803-403 A Columbia SC 548E ONVOY, LLC - SC 434   2007-06-02   

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

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