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: LHGHIAXPDS1

Remotes:

Switch Switch name Switch type
CLNDIAXORS1  CALLENDER  DLM 
DYTNIAXORS1  DAYTON  DLM 
HRCRIAXORS1  HARCOURT  DLM 
NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
515-359 A Lehigh IA 1225 LEHIGH VALLEY COOP. TEL. ASSN. 632      

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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