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: 300

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
227-300 A Ashton MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2025-12-18   
227-300 0 Ashton MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2026-01-12   
227-300 1 Ashton MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2026-06-15   
227-300 7 Ashton MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2025-12-18   
227-300 8 Ashton MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2025-12-18   
227-300 9 Ashton MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2025-12-18   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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