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
443-494 2 Millersville MD 876D ONVOY, LLC - MD 238   2012-10-07   
443-494 5 Millersville MD 876D ONVOY, LLC - MD 238   2021-04-02   
443-495 6 Parkville MD 876D ONVOY, LLC - MD 238   2018-05-27   
443-499 5 Jarrettsville MD 876D ONVOY, LLC - MD 238   2023-10-22   
443-499 9 Jarrettsville MD 876D ONVOY, LLC - MD 238   2012-10-07   
443-501 2 Pikesville MD 876D ONVOY, LLC - MD 238   2012-10-08   
443-508 7 Hampstead MD 876D ONVOY, LLC - MD 238   2012-10-07   
443-512 2 Edgewood MD 876D ONVOY, LLC - MD 238   2014-09-05   
443-516 A Sykesville MD 876D ONVOY, LLC - MD 238      
443-516 8 Sykesville MD 876D ONVOY, LLC - MD 238   2016-03-28   
443-516 9 Sykesville MD 876D ONVOY, LLC - MD 238   2016-03-28   
443-526 3 Havre de Grace MD 876D ONVOY, LLC - MD 238   2016-03-24   
443-526 4 Havre de Grace MD 876D ONVOY, LLC - MD 238   2016-03-24   
443-526 7 Havre de Grace MD 876D ONVOY, LLC - MD 238   2015-08-01   
443-526 8 Havre de Grace MD 876D ONVOY, LLC - MD 238   2015-08-01   
443-530 5 Dundalk MD 876D ONVOY, LLC - MD 238   2016-01-22   
443-533 5 Jarrettsville MD 876D ONVOY, LLC - MD 238   2016-04-04   
443-533 6 Jarrettsville MD 876D ONVOY, LLC - MD 238   2016-04-04   
443-543 8 Arbutus MD 876D ONVOY, LLC - MD 238   2014-10-06   
443-543 9 Arbutus MD 876D ONVOY, LLC - MD 238   2014-10-06   
443-545 0 Columbia MD 876D ONVOY, LLC - MD 238   2021-09-25   
443-545 7 Columbia MD 876D ONVOY, LLC - MD 238   2016-03-03   
443-550 7 North Beach MD 876D ONVOY, LLC - MD 238   2012-10-07   
443-551 0 Woodlawn MD 876D ONVOY, LLC - MD 238   2024-05-11   
443-551 2 Woodlawn MD 876D ONVOY, LLC - MD 238   2024-07-05   
443-551 6 Woodlawn MD 876D ONVOY, LLC - MD 238   2025-02-01   
443-551 7 Woodlawn MD 876D ONVOY, LLC - MD 238   2025-02-01   
443-551 8 Woodlawn MD 876D ONVOY, LLC - MD 238   2024-10-21   
443-551 9 Woodlawn MD 876D ONVOY, LLC - MD 238   2024-10-21   
443-557 3 Glen Burnie MD 876D ONVOY, LLC - MD 238   2016-02-29   
443-560 0 Baltimore MD 876D ONVOY, LLC - MD 238   2024-02-24   
443-563 3 Baltimore MD 876D ONVOY, LLC - MD 238   2024-04-04   
443-563 5 Baltimore MD 876D ONVOY, LLC - MD 238   2024-04-04   
443-563 9 Baltimore MD 876D ONVOY, LLC - MD 238   2024-04-04   
443-565 3 Randallstown MD 876D ONVOY, LLC - MD 238   2026-06-22   
443-565 4 Randallstown MD 876D ONVOY, LLC - MD 238   2016-04-28   
443-565 6 Randallstown MD 876D ONVOY, LLC - MD 238   2016-04-28   
443-568 3 Arbutus MD 876D ONVOY, LLC - MD 238   2012-10-07   
443-572 3 Glen Burnie MD 876D ONVOY, LLC - MD 238   2014-09-04   
443-572 4 Glen Burnie MD 876D ONVOY, LLC - MD 238   2016-02-29   
443-576 2 Randallstown MD 876D ONVOY, LLC - MD 238   2016-03-14   
443-576 5 Randallstown MD 876D ONVOY, LLC - MD 238   2016-03-14   
443-578 3 Cockeysville MD 876D ONVOY, LLC - MD 238   2012-02-27   
443-581 A Chase MD 876D ONVOY, LLC - MD 238      
443-581 0 Chase MD 876D ONVOY, LLC - MD 238   2021-03-04   
443-581 1 Chase MD 876D ONVOY, LLC - MD 238   2021-03-04   
443-583 0 Columbia MD 876D ONVOY, LLC - MD 238   2016-03-03   
443-583 5 Columbia MD 876D ONVOY, LLC - MD 238   2014-09-01   
443-585 3 Darlington MD 876D ONVOY, LLC - MD 238   2016-04-10   
443-585 4 Darlington MD 876D ONVOY, LLC - MD 238   2016-04-10   

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Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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