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: 244

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
227-244 A Ridge MD WASHDCSWFMD  530H WIDE VOICE, LLC - MD 236   2024-07-27   
227-244 6 Ridge MD WASHDCSWFMD  530H WIDE VOICE, LLC - MD 236   2024-07-27   

Last updated: Fri, 25 Jul 2025 03:21:23 UTC

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