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: 222

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
227-222 A Washington Zone 16 MD WASHDCSWFMD  530H WIDE VOICE, LLC - MD 236      
227-222 0 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2024-06-08   
227-222 1 Washington Zone 16 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2024-11-11   
227-222 2 Washington Zone 16 MD WASHDCSWFMD  530H WIDE VOICE, LLC - MD 236   2023-12-18   
227-222 3 Washington Zone 16 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2024-01-14   
227-222 4 Washington Zone 16 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2024-01-14   
227-222 5 Washington Zone 16 MD   876D ONVOY, LLC - MD 236   2025-05-10   
227-222 6 Washington Zone 16 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2025-07-27   
227-222 7 Washington Zone 16 MD WASHDCSWNMD  321J HD CARRIER LLC 236   2023-12-18   
227-222 8 Washington Zone 16 MD   876D ONVOY, LLC - MD 236   2025-03-09   
227-222 9 Washington Zone 16 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2024-11-10   

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

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