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: 772

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
227-772 A Washington Zone 4 MD   624H ONVOY SPECTRUM, LLC 236   2025-01-02   
227-772 7 Washington Zone 4 MD   624H ONVOY SPECTRUM, LLC 236      
227-772 8 Washington Zone 4 MD   624H ONVOY SPECTRUM, LLC 236      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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