Local Calling Guide

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OCN: 876D ONVOY, LLC - MD

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
227-444 5 Washington Zone 2 MD   236   2025-10-16   
227-444 6 Washington Zone 2 MD   236   2025-10-16   
227-444 7 Washington Zone 2 MD   236   2025-10-16   
227-444 8 Washington Zone 2 MD   236   2025-10-19   
227-444 9 Washington Zone 2 MD   236   2025-10-19   
227-529 A Gaithersburg MD   236   2026-02-20   
227-529 0 Gaithersburg MD   236   2026-02-20   
227-529 9 Gaithersburg MD   236   2026-02-20   
227-666 A Frederick MD   240   2026-02-17   
227-666 0 Frederick MD   240   2026-02-17   
227-666 6 Frederick MD   240   2026-02-17   
227-722 2 Waldorf MD VINNVACBDS0  236   2024-07-12   
227-722 4 Waldorf MD VINNVACBDS0  236   2024-10-21   
227-722 6 Waldorf MD VINNVACBDS0  236   2024-07-12   
227-722 9 Waldorf MD VINNVACBDS0  236   2024-09-15   
227-727 0 Washington Zone 6 MD   236   2025-02-01   
227-727 4 Washington Zone 6 MD   236   2026-01-11   
227-770 0 Washington Zone 11 MD   236   2025-04-06   
227-770 1 Washington Zone 11 MD   236   2025-05-10   
227-770 2 Washington Zone 11 MD   236   2025-09-28   
227-770 3 Washington Zone 11 MD   236   2025-11-08   
227-770 4 Washington Zone 11 MD   236   2025-11-08   
227-772 0 Washington Zone 4 MD VINNVACBDS0  236   2025-01-09   
227-772 2 Washington Zone 4 MD   236   2025-10-12   
227-772 3 Washington Zone 4 MD   236   2025-11-28   
227-772 9 Washington Zone 4 MD   236   2025-04-06   
227-800 4 Frederick MD   240   2025-04-06   
227-800 7 Frederick MD   240   2025-03-02   
227-888 0 Washington Zone 15 (Baltimore LATA) MD BLTMMDCH42Z  238   2024-04-13   
227-888 1 Washington Zone 15 (Baltimore LATA) MD BLTMMDCH42Z  238   2024-07-12   
227-888 6 Washington Zone 15 (Baltimore LATA) MD BLTMMDCH42Z  238   2024-11-04   
227-888 9 Washington Zone 15 (Baltimore LATA) MD BLTMMDCH42Z  238   2024-10-04   
227-997 3 Washington Zone 2 MD   236   2025-04-14   
227-997 7 Washington Zone 2 MD   236   2025-05-10   
227-997 8 Washington Zone 2 MD   236   2025-05-10   
227-998 3 Washington Zone 2 MD VINNVACBDS0  236   2024-12-02   
227-999 0 Washington Zone 10 MD VINNVACBDS0  236   2024-10-01   
227-999 1 Washington Zone 10 MD VINNVACBDS0  236   2024-02-19   
227-999 2 Washington Zone 10 MD VINNVACBDS0  236   2024-02-19   
227-999 3 Washington Zone 10 MD VINNVACBDS0  236   2024-02-19   
227-999 6 Washington Zone 10 MD VINNVACBDS0  236   2024-02-19   
227-999 8 Washington Zone 10 MD VINNVACBDS0  236   2024-02-19   
240-201 2 Ridge MD VINNVACBDS0  236   2020-10-17   
240-201 3 Ridge MD VINNVACBDS0  236   2021-04-02   
240-201 4 Ridge MD VINNVACBDS0  236   2021-04-02   
240-201 7 Ridge MD VINNVACBDS0  236   2021-09-24   
240-202 A Highfield MD CMLDMDCMEMD  240      
240-202 1 Highfield MD CMLDMDCMEMD  240   2020-07-25   
240-202 2 Highfield MD CMLDMDCMEMD  240   2020-07-25   
240-202 3 Highfield MD CMLDMDCMEMD  240   2020-10-17   

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

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