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: MNFDOHXAX5Y

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
220-259 A Fredericktown OH 515J IP HORIZON LLC 923   2024-03-31   
234-392 A Wooster OH 515J IP HORIZON LLC 923   2024-03-31   
567-327 A Mansfield OH 515J IP HORIZON LLC 923      
567-441 A Lima OH 515J IP HORIZON LLC 923   2024-03-31   
937-924 A Marysville OH 515J IP HORIZON LLC 923   2024-03-29   
937-948 A Sidney OH 515J IP HORIZON LLC 923   2024-03-29   

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

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