Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 227 [Rate centres in NPA 227] [Dial plan for NPA 227]

NXX: 318

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
227-318 A Myersville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240   2026-10-09   
227-318 9 Myersville MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240   2026-10-09   

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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