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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Switch: CLEVOH64X0X

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
440-970 4 Burton OH 624H ONVOY SPECTRUM, LLC 320   2021-06-06   
440-971 9 Berea OH 624H ONVOY SPECTRUM, LLC 320   2022-01-15   
440-973 2 Berea OH 624H ONVOY SPECTRUM, LLC 320   2021-06-06   

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

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