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: YNTWOH74OMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
330-229 A Youngstown OH 9748 AMERICAN MESSAGING SERVICES, LLC 322      
330-387 A Niles OH 9748 AMERICAN MESSAGING SERVICES, LLC 322      
330-589 A Niles OH 9748 AMERICAN MESSAGING SERVICES, LLC 322      
330-660 A Youngstown OH 9748 AMERICAN MESSAGING SERVICES, LLC 322      

Last updated: Thu, 04 Aug 2022 23:14:42 UTC

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