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 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   236   2024-07-12   
227-722 4 Waldorf MD   236   2024-10-21   
227-722 6 Waldorf MD   236   2024-07-12   
227-722 9 Waldorf MD   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   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   238   2024-04-13   
227-888 1 Washington Zone 15 (Baltimore LATA) MD   238   2024-07-12   
227-888 6 Washington Zone 15 (Baltimore LATA) MD   238   2024-11-04   
227-888 9 Washington Zone 15 (Baltimore LATA) MD   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   236   2024-12-02   
227-999 0 Washington Zone 10 MD   236   2024-10-01   
227-999 1 Washington Zone 10 MD   236   2024-02-19   
227-999 2 Washington Zone 10 MD   236   2024-02-19   
227-999 3 Washington Zone 10 MD   236   2024-02-19   
227-999 6 Washington Zone 10 MD   236   2024-02-19   
227-999 8 Washington Zone 10 MD   236   2024-02-19   
240-201 2 Ridge MD   236   2020-10-17   
240-201 3 Ridge MD   236   2021-04-02   
240-201 4 Ridge MD   236   2021-04-02   
240-201 7 Ridge MD   236   2021-09-24   
240-202 A Highfield MD CMLDMDCMEMD  240      
240-202 1 Highfield MD   240   2020-07-25   
240-202 2 Highfield MD   240   2020-07-25   
240-202 3 Highfield MD   240   2020-10-17   
240-202 4 Highfield MD   240   2020-10-17   
240-202 6 Highfield MD   240   2023-04-17   
240-208 7 La Plata MD   236   2024-07-12   
240-209 4 Indian Head MD   236   2023-06-17   
240-209 5 Indian Head MD   236   2022-10-15   
240-209 6 Indian Head MD   236   2022-10-15   
240-209 8 Indian Head MD   236   2025-04-06   
240-213 0 Waldorf MD   236   2021-01-03   
240-213 1 Waldorf MD   236   2021-01-03   
240-213 2 Waldorf MD   236   2021-01-03   
240-213 3 Waldorf MD   236   2020-04-30   
240-213 4 Waldorf MD   236   2020-04-30   
240-213 5 Waldorf MD   236   2021-01-03   
240-213 6 Waldorf MD   236   2020-10-17   
240-213 7 Waldorf MD   236   2020-10-17   
240-213 8 Waldorf MD   236   2021-01-03   
240-219 2 Ridge MD   236   2017-05-18   
240-219 3 Ridge MD   236   2018-06-07   
240-219 4 Ridge MD   236   2020-07-04   
240-219 5 Ridge MD   236   2018-09-13   
240-219 6 Ridge MD   236   2020-07-04   
240-219 7 Ridge MD   236   2016-03-14   
240-219 8 Ridge MD   236   2016-03-14   
240-219 9 Ridge MD   236   2015-06-27   
240-220 2 Poolesville MD   236   2021-12-23   
240-220 3 Poolesville MD   236   2021-07-12   
240-220 7 Poolesville MD   236   2022-04-25   
240-221 5 Washington Zone 11 MD   236   2016-10-01   
240-221 6 Washington Zone 11 MD   236   2016-10-01   
240-221 9 Washington Zone 11 MD   236   2024-02-23   
240-222 1 Waldorf MD   236   2020-08-09   
240-222 5 Waldorf MD   236   2020-08-09   
240-222 6 Waldorf MD   236   2020-06-11   
240-222 7 Waldorf MD   236   2020-06-11   
240-222 8 Waldorf MD   236   2020-06-11   
240-226 A Oakland MD CMLDMDCMEMD  240      
240-226 1 Oakland MD   240   2020-09-13   
240-226 2 Oakland MD   240   2020-09-13   
240-226 4 Oakland MD   240   2023-06-16   
240-226 5 Oakland MD   240   2021-04-02   
240-226 6 Oakland MD   240   2021-04-02   
240-226 7 Oakland MD   240   2021-07-11   
240-229 9 Waldorf MD   236   2023-11-14   
240-232 4 Washington Zone 14 MD   236   2021-09-24   
240-237 6 Lexington Park-Great Mills MD   236   2024-04-05   
240-237 9 Lexington Park-Great Mills MD   236   2024-04-05   
240-240 1 Damascus (Hagerstown LATA) MD   240   2021-04-29   
240-240 2 Damascus (Hagerstown LATA) MD   240   2021-05-21   
240-240 3 Damascus (Hagerstown LATA) MD   240   2021-05-21   
240-240 6 Damascus (Hagerstown LATA) MD   240   2021-09-20   
240-240 7 Damascus (Hagerstown LATA) MD   240   2021-09-20   
240-244 4 Washington Zone 16 MD   236   2008-10-05   

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Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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