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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NPA: 220 [Rate centres in NPA 220] [Dial plan for NPA 220]

NXX: 245

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
220-245 A Walnut OH CLMKOHPE0MD  793K TWC IP ENABLED SERVICES, LLC 324   2025-02-04   
220-245 0 Walnut OH   464C ONVOY, LLC - OH 324   2023-07-30   
220-245 1 Walnut OH   793K TWC IP ENABLED SERVICES, LLC 324   2023-03-19   
220-245 5 Walnut OH   464C ONVOY, LLC - OH 324   2023-03-20   
220-245 8 Walnut OH   515J IP HORIZON LLC 324   2024-04-29   
220-245 9 Walnut OH   515J IP HORIZON LLC 324   2024-04-29   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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