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: 257

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
440-257 A Mentor OH MOTLOH2525C  9321 OHIO BELL TEL CO 320      

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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