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: 977

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
440-977 A Windsor OH CLEVOHEKKMD  516J TON80 COMMUNICATIONS, LLC 320      
440-977 1 Windsor OH CLEVOH64XKX  793K TWC IP ENABLED SERVICES, LLC 320   2024-07-07   
440-977 7 Windsor OH CLEVOHEKKMD  516J TON80 COMMUNICATIONS, LLC 320   2022-04-22   
440-977 9 Windsor OH   145J TERRA NOVA TELECOM INC. 320   2025-07-10   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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