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: ESYRNYAW1MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
315-514 A Massena NY 793K TWC IP ENABLED SERVICES, LLC 136      
315-514 1 Massena NY 793K TWC IP ENABLED SERVICES, LLC 136   2010-09-04   
315-514 7 Massena NY 793K TWC IP ENABLED SERVICES, LLC 136   2017-09-25   
315-705 4 Massena NY 793K TWC IP ENABLED SERVICES, LLC 136   2004-10-28   
315-705 6 Massena NY 793K TWC IP ENABLED SERVICES, LLC 136   2006-12-21   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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