Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 440 [Rate centres in NPA 440] [Dial plan for NPA 440]

NXX: 820

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
440-820 A Huntsburg OH CLEVOH64X0X  624H ONVOY SPECTRUM, LLC 320      
440-820 0 Huntsburg OH   145J TERRA NOVA TELECOM INC. 320   2025-07-12   
440-820 2 Huntsburg OH   464C ONVOY, LLC - OH 320   2021-07-24   
440-820 3 Huntsburg OH   793K TWC IP ENABLED SERVICES, LLC 320   2022-10-09   
440-820 8 Huntsburg OH   624H ONVOY SPECTRUM, LLC 320   2021-07-12   
440-820 9 Huntsburg OH   073H TELNYX LLC 320   2022-04-29   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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