Local Calling Guide

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NPA: 227 [Rate centres in NPA 227] [Dial plan for NPA 227]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
227-305 7 Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2026-02-20   
227-305 8 Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2026-02-20   
227-305 9 Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2026-02-20   
227-315 A Ashton MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2026-03-06   
227-315 5 Ashton MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2026-03-06   
227-315 6 Ashton MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2026-03-06   
227-315 7 Ashton MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2026-03-06   
227-315 8 Ashton MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2026-03-06   
227-315 9 Ashton MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2026-03-06   
227-333 A Washington Zone 16 MD   876D ONVOY, LLC - MD 236   2025-10-16   
227-333 0 Washington Zone 16 MD   876D ONVOY, LLC - MD 236   2025-10-17   
227-333 3 Washington Zone 16 MD   876D ONVOY, LLC - MD 236   2025-10-16   
227-333 4 Washington Zone 16 MD   876D ONVOY, LLC - MD 236   2025-10-16   
227-333 5 Washington Zone 16 MD   876D ONVOY, LLC - MD 236   2025-10-16   
227-333 6 Washington Zone 16 MD   876D ONVOY, LLC - MD 236   2025-10-16   
227-334 A Keedysville MD FRDRMDFRX2Y  7421 AT&T - LOCAL 240   2024-12-23   
227-334 0 Keedysville MD   876D ONVOY, LLC - MD 240   2025-10-12   
227-334 4 Keedysville MD   145J TERRA NOVA TELECOM INC. 240   2025-02-13   
227-334 9 Keedysville MD FRDRMDFRX2Y  7421 AT&T - LOCAL 240   2024-12-23   
227-338 A Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2025-12-04   
227-338 0 Washington Zone 10 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-12-23   
227-338 1 Washington Zone 10 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-12-23   
227-338 2 Washington Zone 10 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-12-23   
227-338 3 Washington Zone 10 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-12-23   
227-338 4 Washington Zone 10 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-12-23   
227-338 5 Washington Zone 10 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-12-23   
227-338 6 Washington Zone 10 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-12-23   
227-338 7 Washington Zone 10 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-12-23   
227-338 8 Washington Zone 10 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-12-23   
227-338 9 Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2025-12-04   
227-368 A Mechanicsville MD WASHDCSWFMD  530H WIDE VOICE, LLC - MD 236      
227-368 0 Mechanicsville MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2024-03-07   
227-368 1 Mechanicsville MD   876D ONVOY, LLC - MD 236   2025-10-12   
227-368 6 Mechanicsville MD WASHDCSWFMD  530H WIDE VOICE, LLC - MD 236   2023-10-21   
227-444 A Washington Zone 2 MD   876D ONVOY, LLC - MD 236   2025-10-16   
227-444 0 Washington Zone 2 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-02-26   
227-444 1 Washington Zone 2 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-02-26   
227-444 2 Washington Zone 2 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-02-26   
227-444 3 Washington Zone 2 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2026-02-26   
227-444 4 Washington Zone 2 MD   876D ONVOY, LLC - MD 236   2025-10-16   
227-444 5 Washington Zone 2 MD   876D ONVOY, LLC - MD 236   2025-10-16   
227-444 6 Washington Zone 2 MD   876D ONVOY, LLC - MD 236   2025-10-16   
227-444 7 Washington Zone 2 MD   876D ONVOY, LLC - MD 236   2025-10-16   
227-444 8 Washington Zone 2 MD   876D ONVOY, LLC - MD 236   2025-10-19   
227-444 9 Washington Zone 2 MD   876D ONVOY, LLC - MD 236   2025-10-19   
227-529 A Gaithersburg MD   876D ONVOY, LLC - MD 236   2026-02-20   
227-529 0 Gaithersburg MD   876D ONVOY, LLC - MD 236   2026-02-20   
227-529 1 Gaithersburg MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2026-02-27   
227-529 2 Gaithersburg MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2026-02-27   
227-529 3 Gaithersburg MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2026-02-27   

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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