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: LIMAOHXAX5Y

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
937-710 4 Sidney OH 793K TWC IP ENABLED SERVICES, LLC 923   2007-02-13   
937-710 9 Sidney OH 793K TWC IP ENABLED SERVICES, LLC 923   2008-03-12   
937-821 A Fort Loramie OH 793K TWC IP ENABLED SERVICES, LLC 923   2025-02-20   
937-821 0 Fort Loramie OH 793K TWC IP ENABLED SERVICES, LLC 923   2013-09-30   
937-858 0 Botkins OH 793K TWC IP ENABLED SERVICES, LLC 923   2013-09-30   
937-894 A Botkins OH 793K TWC IP ENABLED SERVICES, LLC 923   2025-02-20   
937-894 0 Botkins OH 793K TWC IP ENABLED SERVICES, LLC 923      

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Last updated: Sat, 04 Jul 2026 13:07:56 UTC

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