Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 513 [Rate centres in NPA 513] [Dial plan for NPA 513]

NXX: 424

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
513-424 A Middletown OH MDTWOH42DS1  9321 OHIO BELL TEL CO 328      

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

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