Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
240-905 5 Brandywine MD 624H ONVOY SPECTRUM, LLC 236   2022-03-04   
240-909 4 Laurel MD 624H ONVOY SPECTRUM, LLC 236   2022-03-06   
240-909 5 Laurel MD 624H ONVOY SPECTRUM, LLC 236   2022-03-06   
240-922 4 Washington Zone 11 MD 624H ONVOY SPECTRUM, LLC 236   2021-05-21   
240-922 7 Washington Zone 11 MD 624H ONVOY SPECTRUM, LLC 236   2022-01-15   
240-922 8 Washington Zone 11 MD 624H ONVOY SPECTRUM, LLC 236   2022-01-15   
240-923 2 Washington Zone 6 MD 624H ONVOY SPECTRUM, LLC 236   2022-04-01   
240-923 3 Washington Zone 6 MD 624H ONVOY SPECTRUM, LLC 236   2022-04-01   
240-946 6 Washington Zone 14 MD 624H ONVOY SPECTRUM, LLC 236   2022-02-07   
240-946 7 Washington Zone 14 MD 624H ONVOY SPECTRUM, LLC 236   2022-02-07   
240-982 8 Gaithersburg MD 624H ONVOY SPECTRUM, LLC 236   2024-07-06   
301-234 2 Washington Zone 16 MD 624H ONVOY SPECTRUM, LLC 236   2021-12-09   
301-235 6 Washington Zone 16 MD 624H ONVOY SPECTRUM, LLC 236   2021-05-22   
301-238 9 Washington Zone 16 MD 624H ONVOY SPECTRUM, LLC 236   2021-05-22   
301-244 1 Washington Zone 3 MD 624H ONVOY SPECTRUM, LLC 236   2021-11-08   
301-267 9 Washington Zone 3 MD 624H ONVOY SPECTRUM, LLC 236   2024-06-24   
301-278 4 Washington Zone 5 MD 624H ONVOY SPECTRUM, LLC 236   2021-12-09   
301-288 6 Washington Zone 12 MD 624H ONVOY SPECTRUM, LLC 236   2021-11-08   
301-289 0 Washington Zone 13 MD 624H ONVOY SPECTRUM, LLC 236   2024-06-24   
301-289 1 Washington Zone 13 MD 624H ONVOY SPECTRUM, LLC 236   2024-06-24   
301-358 8 Washington Zone 15 MD 624H ONVOY SPECTRUM, LLC 236   2021-11-08   
301-372 9 Washington Zone 16 MD 624H ONVOY SPECTRUM, LLC 236   2021-05-22   
301-409 A Washington Zone 2 MD 624H ONVOY SPECTRUM, LLC 236      
301-409 1 Washington Zone 2 MD 624H ONVOY SPECTRUM, LLC 236   2022-03-20   
301-409 2 Washington Zone 2 MD 624H ONVOY SPECTRUM, LLC 236   2022-03-20   
301-409 7 Washington Zone 2 MD 624H ONVOY SPECTRUM, LLC 236   2022-03-10   
301-409 8 Washington Zone 2 MD 624H ONVOY SPECTRUM, LLC 236   2022-03-10   
301-409 9 Washington Zone 2 MD 624H ONVOY SPECTRUM, LLC 236   2022-03-10   
301-410 A Washington Zone 6 MD 624H ONVOY SPECTRUM, LLC 236      
301-410 0 Washington Zone 6 MD 624H ONVOY SPECTRUM, LLC 236   2022-06-26   
301-410 1 Washington Zone 6 MD 624H ONVOY SPECTRUM, LLC 236   2022-06-26   
301-410 2 Washington Zone 6 MD 624H ONVOY SPECTRUM, LLC 236   2022-06-26   
301-410 3 Washington Zone 6 MD 624H ONVOY SPECTRUM, LLC 236   2022-06-26   
301-410 4 Washington Zone 6 MD 624H ONVOY SPECTRUM, LLC 236   2022-06-26   
301-410 5 Washington Zone 6 MD 624H ONVOY SPECTRUM, LLC 236   2022-06-26   
301-410 6 Washington Zone 6 MD 624H ONVOY SPECTRUM, LLC 236   2022-06-26   
301-410 7 Washington Zone 6 MD 624H ONVOY SPECTRUM, LLC 236   2022-06-26   
301-410 8 Washington Zone 6 MD 624H ONVOY SPECTRUM, LLC 236   2022-06-26   
301-410 9 Washington Zone 6 MD 624H ONVOY SPECTRUM, LLC 236   2022-06-26   
301-597 0 Waldorf MD 624H ONVOY SPECTRUM, LLC 236   2022-03-11   
301-597 2 Waldorf MD 624H ONVOY SPECTRUM, LLC 236   2022-03-21   
301-597 3 Waldorf MD 624H ONVOY SPECTRUM, LLC 236   2022-03-21   
301-597 5 Waldorf MD 624H ONVOY SPECTRUM, LLC 236   2022-03-11   
301-597 6 Waldorf MD 624H ONVOY SPECTRUM, LLC 236   2022-03-11   
301-701 1 Washington Zone 13 MD 624H ONVOY SPECTRUM, LLC 236   2024-12-05   
301-701 7 Washington Zone 13 MD 624H ONVOY SPECTRUM, LLC 236   2024-12-05   
301-701 8 Washington Zone 13 MD 624H ONVOY SPECTRUM, LLC 236   2024-12-05   
301-701 9 Washington Zone 13 MD 624H ONVOY SPECTRUM, LLC 236   2024-12-05   
301-715 6 Washington Zone 15 MD 624H ONVOY SPECTRUM, LLC 236   2021-11-08   
301-715 7 Washington Zone 15 MD 624H ONVOY SPECTRUM, LLC 236   2022-06-14   

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

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