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
443-392 3 Baltimore MD 876D ONVOY, LLC - MD 238   2024-02-24   
443-396 2 Odenton MD 876D ONVOY, LLC - MD 238   2012-10-07   
443-396 7 Odenton MD 876D ONVOY, LLC - MD 238   2018-05-27   
443-398 3 Sykesville MD 876D ONVOY, LLC - MD 238   2012-02-29   
443-399 A Dundalk MD 876D ONVOY, LLC - MD 238      
443-399 0 Dundalk MD 876D ONVOY, LLC - MD 238   2024-10-21   
443-399 1 Dundalk MD 876D ONVOY, LLC - MD 238   2024-10-21   
443-399 2 Dundalk MD 876D ONVOY, LLC - MD 238   2012-10-08   
443-400 7 Brooklyn Park-Linthicum MD 876D ONVOY, LLC - MD 238   2012-09-13   
443-402 3 Edgewood MD 876D ONVOY, LLC - MD 238   2012-10-07   
443-407 8 Dundalk MD 876D ONVOY, LLC - MD 238   2016-03-31   
443-412 8 Churchville MD 876D ONVOY, LLC - MD 238   2016-03-25   
443-419 4 Glenwood MD 876D ONVOY, LLC - MD 238   2024-03-03   
443-419 6 Glenwood MD 876D ONVOY, LLC - MD 238   2016-04-04   
443-419 7 Glenwood MD 876D ONVOY, LLC - MD 238   2016-04-04   
443-420 6 Ellicott City MD 876D ONVOY, LLC - MD 238   2016-04-08   
443-420 9 Ellicott City MD 876D ONVOY, LLC - MD 238   2016-04-08   
443-424 6 Cardiff MD 876D ONVOY, LLC - MD 238   2012-10-07   
443-429 1 Woodlawn MD 876D ONVOY, LLC - MD 238   2012-10-08   
443-432 2 Prince Frederick MD 876D ONVOY, LLC - MD 238   2014-10-20   
443-432 4 Prince Frederick MD 876D ONVOY, LLC - MD 238   2014-10-20   
443-441 6 Glenwood MD 876D ONVOY, LLC - MD 238   2024-04-21   
443-443 5 Arbutus MD 876D ONVOY, LLC - MD 238   2024-03-08   
443-443 6 Arbutus MD 876D ONVOY, LLC - MD 238   2024-04-13   
443-443 7 Arbutus MD 876D ONVOY, LLC - MD 238   2026-01-12   
443-443 8 Arbutus MD 876D ONVOY, LLC - MD 238   2024-07-15   
443-443 9 Arbutus MD 876D ONVOY, LLC - MD 238   2024-07-15   
443-450 9 Pikesville MD 876D ONVOY, LLC - MD 238   2016-01-14   
443-452 2 Baltimore MD 876D ONVOY, LLC - MD 238   2024-02-24   
443-452 3 Baltimore MD 876D ONVOY, LLC - MD 238   2024-02-24   
443-452 5 Baltimore MD 876D ONVOY, LLC - MD 238   2024-02-24   
443-452 6 Baltimore MD 876D ONVOY, LLC - MD 238   2024-02-24   
443-453 A Baltimore MD 876D ONVOY, LLC - MD 238      
443-453 0 Baltimore MD 876D ONVOY, LLC - MD 238   2007-12-03   
443-455 9 Baltimore MD 876D ONVOY, LLC - MD 238   2024-02-24   
443-456 4 Edgewood MD 876D ONVOY, LLC - MD 238   2016-01-21   
443-457 2 Brooklyn Park-Linthicum MD 876D ONVOY, LLC - MD 238   2016-03-24   
443-457 9 Brooklyn Park-Linthicum MD 876D ONVOY, LLC - MD 238   2016-03-24   
443-464 0 Churchville MD 876D ONVOY, LLC - MD 238   2015-10-04   
443-464 1 Churchville MD 876D ONVOY, LLC - MD 238   2016-03-25   
443-464 2 Churchville MD 876D ONVOY, LLC - MD 238   2016-03-25   
443-484 0 Edgewood MD 876D ONVOY, LLC - MD 238   2021-07-11   
443-486 1 Prince Frederick MD 876D ONVOY, LLC - MD 238   2016-03-10   
443-486 3 Prince Frederick MD 876D ONVOY, LLC - MD 238   2016-03-10   
443-486 6 Prince Frederick MD 876D ONVOY, LLC - MD 238   2021-09-23   
443-487 0 Westminster MD 876D ONVOY, LLC - MD 238   2022-10-16   
443-489 2 Chase MD 876D ONVOY, LLC - MD 238   2016-03-24   
443-489 4 Chase MD 876D ONVOY, LLC - MD 238   2016-03-24   
443-491 A Parkton MD 876D ONVOY, LLC - MD 238      
443-491 9 Parkton MD 876D ONVOY, LLC - MD 238   2012-10-07   

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

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