Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 220 [Rate centres in NPA 220] [Dial plan for NPA 220]

NXX: 236

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
220-236 A Chester OH   624H ONVOY SPECTRUM, LLC 324      
220-236 0 Chester OH CLMBOH1143Z  624H ONVOY SPECTRUM, LLC 324   2024-07-25   

Last updated: Tue, 29 Sep 2026 03:00:13 UTC

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