Local Calling Guide

Area code/prefix search

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
301-485 2 Washington Zone 6 MD 876D ONVOY, LLC - MD 236   2016-03-02   
301-485 4 Washington Zone 6 MD 876D ONVOY, LLC - MD 236   2016-04-28   
301-485 5 Washington Zone 6 MD 876D ONVOY, LLC - MD 236   2015-06-27   
301-507 0 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2024-02-24   
301-507 1 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2024-02-24   
301-507 2 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2024-02-24   
301-507 3 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2024-02-24   
301-507 4 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2024-07-27   
301-507 7 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2024-07-27   
301-507 8 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2024-07-27   
301-507 9 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2024-07-27   
301-513 8 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2024-09-15   
301-517 6 Washington Zone 10 MD 876D ONVOY, LLC - MD 236   2018-01-13   
301-517 9 Washington Zone 10 MD 876D ONVOY, LLC - MD 236   2018-01-13   
301-539 6 La Plata MD 876D ONVOY, LLC - MD 236   2022-08-21   
301-547 7 Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2020-12-03   
301-550 2 Washington Zone 10 MD 876D ONVOY, LLC - MD 236   2022-10-15   
301-558 2 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2025-09-28   
301-558 3 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2025-09-28   
301-558 4 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2025-09-28   
301-558 5 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2025-08-29   
301-558 6 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2025-09-28   
301-558 8 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2025-08-29   
301-569 9 Gaithersburg MD 876D ONVOY, LLC - MD 236   2012-04-05   
301-579 7 Brandywine MD 876D ONVOY, LLC - MD 236   2016-03-03   
301-579 8 Brandywine MD 876D ONVOY, LLC - MD 236   2016-03-03   
301-591 7 Gaithersburg MD 876D ONVOY, LLC - MD 236   2021-02-18   
301-597 1 Waldorf MD 876D ONVOY, LLC - MD 236   2022-04-25   
301-597 4 Waldorf MD 876D ONVOY, LLC - MD 236   2022-04-25   
301-597 7 Waldorf MD 876D ONVOY, LLC - MD 236   2022-04-25   
301-603 3 Washington Zone 11 MD 876D ONVOY, LLC - MD 236   2015-06-27   
301-610 3 Washington Zone 10 MD 876D ONVOY, LLC - MD 236   2020-04-30   
301-635 0 Washington Zone 5 MD 876D ONVOY, LLC - MD 236   2023-05-16   
301-635 1 Washington Zone 5 MD 876D ONVOY, LLC - MD 236   2023-05-16   
301-635 2 Washington Zone 5 MD 876D ONVOY, LLC - MD 236   2023-01-07   
301-635 3 Washington Zone 5 MD 876D ONVOY, LLC - MD 236   2023-09-14   
301-635 4 Washington Zone 5 MD 876D ONVOY, LLC - MD 236   2023-09-14   
301-635 5 Washington Zone 5 MD 876D ONVOY, LLC - MD 236   2023-09-14   
301-635 6 Washington Zone 5 MD 876D ONVOY, LLC - MD 236   2023-02-09   
301-635 7 Washington Zone 5 MD 876D ONVOY, LLC - MD 236   2023-02-09   
301-638 8 Waldorf MD 876D ONVOY, LLC - MD 236   2019-02-19   
301-640 5 Washington Zone 10 MD 876D ONVOY, LLC - MD 236   2012-09-06   
301-666 2 Washington Zone 14 MD 876D ONVOY, LLC - MD 236   2017-12-14   
301-679 1 Washington Zone 12 MD 876D ONVOY, LLC - MD 236   2008-10-05   
301-679 7 Washington Zone 12 MD 876D ONVOY, LLC - MD 236   2012-10-07   
301-683 5 Washington Zone 4 MD 876D ONVOY, LLC - MD 236   2014-10-24   
301-684 6 Indian Head MD 876D ONVOY, LLC - MD 236   2012-09-13   
301-685 0 Damascus MD 876D ONVOY, LLC - MD 236   2012-10-06   
301-685 7 Damascus MD 876D ONVOY, LLC - MD 236   2016-03-11   
301-686 5 Washington Zone 6 MD 876D ONVOY, LLC - MD 236   2016-04-28   
301-686 6 Washington Zone 6 MD 876D ONVOY, LLC - MD 236   2026-06-13   
301-691 2 Poolesville MD 876D ONVOY, LLC - MD 236   2015-10-09   
301-691 3 Poolesville MD 876D ONVOY, LLC - MD 236   2012-10-07   
301-691 4 Poolesville MD 876D ONVOY, LLC - MD 236   2015-06-27   
301-701 2 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2020-12-03   
301-701 3 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2020-12-03   
301-701 4 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2020-12-03   
301-701 5 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2020-12-03   
301-719 2 Washington Zone 16 MD 876D ONVOY, LLC - MD 236   2020-04-30   
301-719 3 Washington Zone 16 MD 876D ONVOY, LLC - MD 236   2020-04-30   
301-743 0 Indian Head MD 876D ONVOY, LLC - MD 236   2025-01-06   
301-743 1 Indian Head MD 876D ONVOY, LLC - MD 236   2022-08-21   
301-753 3 Washington Zone 6 MD 876D ONVOY, LLC - MD 236   2020-12-03   
301-753 8 Washington Zone 6 MD 876D ONVOY, LLC - MD 236   2020-12-03   
301-756 5 Washington Zone 14 MD 876D ONVOY, LLC - MD 236   2020-04-30   
301-761 8 Washington Zone 11 MD 876D ONVOY, LLC - MD 236   2024-02-23   
301-769 7 Leonardtown MD 876D ONVOY, LLC - MD 236   2022-08-15   
301-771 0 Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2014-09-01   
301-778 2 Washington Zone 5 MD 876D ONVOY, LLC - MD 236   2008-10-05   
301-778 6 Washington Zone 5 MD 876D ONVOY, LLC - MD 236   2012-04-05   
301-780 4 Washington Zone 15 MD 876D ONVOY, LLC - MD 236   2017-07-12   
301-804 2 Ashton MD 876D ONVOY, LLC - MD 236   2014-10-24   
301-804 6 Ashton MD 876D ONVOY, LLC - MD 236   2014-10-24   
301-820 7 Gaithersburg MD 876D ONVOY, LLC - MD 236   2011-06-17   
301-822 2 Washington Zone 11 MD 876D ONVOY, LLC - MD 236   2016-02-09   
301-823 0 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2025-02-01   
301-823 1 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2025-02-01   
301-823 6 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2025-03-09   
301-844 9 Washington Zone 3 MD 876D ONVOY, LLC - MD 236   2024-10-04   
301-851 0 Washington Zone 4 MD 876D ONVOY, LLC - MD 236   2014-08-29   
301-851 6 Washington Zone 4 MD 876D ONVOY, LLC - MD 236   2016-02-29   
301-867 5 Washington Zone 14 MD 876D ONVOY, LLC - MD 236   2016-03-14   
301-867 7 Washington Zone 14 MD 876D ONVOY, LLC - MD 236   2016-03-14   
301-872 3 Ridge MD 876D ONVOY, LLC - MD 236   2023-06-17   
301-886 5 Washington Zone 13 MD 876D ONVOY, LLC - MD 236   2025-08-09   
301-888 0 Washington Zone 16 MD 876D ONVOY, LLC - MD 236   2017-07-19   
301-888 3 Washington Zone 16 MD 876D ONVOY, LLC - MD 236   2017-08-13   
301-888 4 Washington Zone 16 MD 876D ONVOY, LLC - MD 236   2017-07-28   
301-888 5 Washington Zone 16 MD 876D ONVOY, LLC - MD 236   2014-10-27   
301-888 6 Washington Zone 16 MD 876D ONVOY, LLC - MD 236   2014-10-27   
301-888 7 Washington Zone 16 MD 876D ONVOY, LLC - MD 236   2017-07-28   
301-900 A Washington Zone 2 MD 876D ONVOY, LLC - MD 236      
301-900 0 Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2015-04-20   
301-900 1 Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2015-07-27   
301-900 2 Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2015-07-27   
301-900 3 Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2015-07-27   
301-900 4 Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2015-07-27   
301-900 5 Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2015-06-27   
301-900 6 Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2015-07-27   
301-900 7 Washington Zone 2 MD 876D ONVOY, LLC - MD 236   2015-07-27   

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Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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