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
227-303 4 Washington Zone 10 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-12-23   
227-303 5 Washington Zone 10 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-12-23   
227-303 6 Washington Zone 10 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-12-23   
227-303 7 Washington Zone 10 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-12-23   
227-303 8 Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2025-12-18   
227-303 9 Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2025-12-18   
227-304 A Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2025-12-15   
227-304 0 Washington Zone 10 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-12-23   
227-304 1 Washington Zone 10 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-12-23   
227-304 2 Washington Zone 10 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-12-23   
227-304 3 Washington Zone 10 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-12-23   
227-304 4 Washington Zone 10 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-12-23   
227-304 5 Washington Zone 10 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-12-23   
227-304 7 Washington Zone 10 MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2025-12-23   
227-304 8 Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2025-12-15   
227-304 9 Washington Zone 10 MD   6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2025-12-15   
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 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   
227-722 A Waldorf MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2024-06-26   
227-722 0 Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2024-06-27   
227-722 1 Waldorf MD WASKDCFNAMD  6395 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MD 236   2024-06-27   
227-722 2 Waldorf MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2024-07-12   
227-722 3 Waldorf MD BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2024-11-01   
227-722 4 Waldorf MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2024-10-21   
227-722 5 Waldorf MD BTVLMD18G00  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 236   2024-12-06   
227-722 6 Waldorf MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2024-07-12   
227-722 7 Waldorf MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2024-06-26   
227-722 8 Waldorf MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2024-06-26   
227-722 9 Waldorf MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2024-09-15   
227-727 A Washington Zone 6 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2025-01-02   
227-727 0 Washington Zone 6 MD   876D ONVOY, LLC - MD 236   2025-02-01   
227-727 1 Washington Zone 6 MD   490J DISH WIRELESS, LLC 236   2026-01-02   
227-727 2 Washington Zone 6 MD   490J DISH WIRELESS, LLC 236   2026-01-13   
227-727 3 Washington Zone 6 MD   490J DISH WIRELESS, LLC 236   2026-02-10   
227-727 5 Washington Zone 6 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2025-01-02   
227-727 6 Washington Zone 6 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2025-01-02   
227-727 7 Washington Zone 6 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2025-01-02   
227-727 8 Washington Zone 6 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2025-01-02   
227-727 9 Washington Zone 6 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2025-01-02   
227-770 A Washington Zone 11 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2025-01-02   
227-770 0 Washington Zone 11 MD   876D ONVOY, LLC - MD 236   2025-04-06   
227-770 1 Washington Zone 11 MD   876D ONVOY, LLC - MD 236   2025-05-10   
227-770 2 Washington Zone 11 MD   876D ONVOY, LLC - MD 236   2025-09-28   
227-770 3 Washington Zone 11 MD   876D ONVOY, LLC - MD 236   2025-11-08   
227-770 4 Washington Zone 11 MD   876D ONVOY, LLC - MD 236   2025-11-08   
227-770 7 Washington Zone 11 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2025-01-02   
227-770 8 Washington Zone 11 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2025-01-02   
227-770 9 Washington Zone 11 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2025-01-02   
227-772 A Washington Zone 4 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2025-01-02   
227-772 0 Washington Zone 4 MD VINNVACBDS0  876D ONVOY, LLC - MD 236   2025-01-09   
227-772 1 Washington Zone 4 MD BTVLMD12CMA  6855 OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC 236   2025-01-16   
227-772 2 Washington Zone 4 MD   876D ONVOY, LLC - MD 236   2025-10-12   
227-772 3 Washington Zone 4 MD   876D ONVOY, LLC - MD 236   2025-11-28   
227-772 4 Washington Zone 4 MD   490J DISH WIRELESS, LLC 236   2025-02-24   
227-772 5 Washington Zone 4 MD   490J DISH WIRELESS, LLC 236   2025-04-28   
227-772 6 Washington Zone 4 MD   490J DISH WIRELESS, LLC 236   2025-06-23   
227-772 7 Washington Zone 4 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2025-01-02   
227-772 8 Washington Zone 4 MD WASHDCSWMMD  624H ONVOY SPECTRUM, LLC 236   2025-01-02   
227-772 9 Washington Zone 4 MD   876D ONVOY, LLC - MD 236   2025-04-06   
227-777 A Ashton (Baltimore LATA) MD BLTMMDCHYMD  530H WIDE VOICE, LLC - MD 238      
227-777 1 Ashton (Baltimore LATA) MD BLTMMDCHXVX  321J HD CARRIER LLC 238   2023-09-30   
227-777 2 Ashton (Baltimore LATA) MD   145J TERRA NOVA TELECOM INC. 238   2023-11-13   
227-777 3 Ashton (Baltimore LATA) MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2024-01-14   
227-777 4 Ashton (Baltimore LATA) MD BLTMMDCHXUX  624H ONVOY SPECTRUM, LLC 238   2024-01-14   
227-777 7 Ashton (Baltimore LATA) MD BLTMMDCHYMD  530H WIDE VOICE, LLC - MD 238   2023-09-30   
227-800 A Frederick MD FRDRMDFRXPX  624H ONVOY SPECTRUM, LLC 240   2025-01-02   
227-800 0 Frederick MD FRDRMDFRXPX  624H ONVOY SPECTRUM, LLC 240   2025-01-02   
227-800 1 Frederick MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240   2025-01-21   
227-800 2 Frederick MD FRDRMDFRXPX  624H ONVOY SPECTRUM, LLC 240   2025-01-02   
227-800 3 Frederick MD   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 240   2025-01-21   

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Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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