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: 255

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
227-255 A Washington Zone 5 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2024-12-07   
227-255 0 Washington Zone 5 MD WASHDCDP8MD  071F BANDWIDTH.COM CLEC, LLC - MD 236   2024-12-07   
227-255 1 Washington Zone 5 MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2024-12-09   
227-255 2 Washington Zone 5 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2024-12-08   
227-255 3 Washington Zone 5 MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2025-01-15   
227-255 4 Washington Zone 5 MD   6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2025-01-15   
227-255 5 Washington Zone 5 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2024-12-08   
227-255 6 Washington Zone 5 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2024-12-08   
227-255 7 Washington Zone 5 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2024-12-08   
227-255 8 Washington Zone 5 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2024-12-09   
227-255 9 Washington Zone 5 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2024-12-09   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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