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
443-775 2 Annapolis MD 876D ONVOY, LLC - MD 238   2014-12-31   
443-775 3 Annapolis MD 876D ONVOY, LLC - MD 238   2014-12-31   
443-775 7 Annapolis MD 876D ONVOY, LLC - MD 238   2016-02-22   
443-776 2 Elkridge MD 876D ONVOY, LLC - MD 238   2014-09-27   
443-776 4 Elkridge MD 876D ONVOY, LLC - MD 238   2014-09-27   
443-781 A Armiger-Gibson Island MD 876D ONVOY, LLC - MD 238   2024-03-05   
443-781 5 Armiger-Gibson Island MD 876D ONVOY, LLC - MD 238   2021-03-04   
443-781 6 Armiger-Gibson Island MD 876D ONVOY, LLC - MD 238   2021-03-04   
443-781 7 Armiger-Gibson Island MD 876D ONVOY, LLC - MD 238   2025-09-28   
443-781 8 Armiger-Gibson Island MD 876D ONVOY, LLC - MD 238   2019-02-19   
443-781 9 Armiger-Gibson Island MD 876D ONVOY, LLC - MD 238   2019-02-19   
443-782 3 Annapolis MD 876D ONVOY, LLC - MD 238   2017-06-02   
443-782 4 Annapolis MD 876D ONVOY, LLC - MD 238   2018-05-27   
443-785 A Arbutus MD 876D ONVOY, LLC - MD 238      
443-787 3 Bel Air MD 876D ONVOY, LLC - MD 238   2014-09-05   
443-792 0 Brooklyn Park-Linthicum MD 876D ONVOY, LLC - MD 238   2014-10-07   
443-792 8 Brooklyn Park-Linthicum MD 876D ONVOY, LLC - MD 238   2014-10-07   
443-806 7 Baltimore MD 876D ONVOY, LLC - MD 238   2024-06-23   
443-806 8 Baltimore MD 876D ONVOY, LLC - MD 238   2024-06-23   
443-806 9 Baltimore MD 876D ONVOY, LLC - MD 238   2024-06-23   
443-815 4 Essex MD 876D ONVOY, LLC - MD 238   2014-11-01   
443-815 7 Essex MD 876D ONVOY, LLC - MD 238   2014-11-01   
443-816 9 Severna Park MD 876D ONVOY, LLC - MD 238   2025-04-06   
443-819 1 Bel Air MD 876D ONVOY, LLC - MD 238   2015-07-30   
443-819 2 Bel Air MD 876D ONVOY, LLC - MD 238   2015-07-30   
443-830 3 Catonsville MD 876D ONVOY, LLC - MD 238   2021-09-23   
443-830 5 Catonsville MD 876D ONVOY, LLC - MD 238   2021-07-11   
443-830 6 Catonsville MD 876D ONVOY, LLC - MD 238   2021-07-11   
443-836 4 Baltimore MD 876D ONVOY, LLC - MD 238   2018-12-13   
443-836 5 Baltimore MD 876D ONVOY, LLC - MD 238   2020-02-13   
443-843 0 Havre de Grace MD 876D ONVOY, LLC - MD 238   2012-10-07   
443-853 8 Baltimore MD 876D ONVOY, LLC - MD 238   2018-12-13   
443-853 9 Baltimore MD 876D ONVOY, LLC - MD 238   2018-12-13   
443-863 2 Baltimore MD 876D ONVOY, LLC - MD 238   2010-10-20   
443-863 3 Baltimore MD 876D ONVOY, LLC - MD 238   2010-10-20   
443-868 2 Essex MD 876D ONVOY, LLC - MD 238   2014-09-01   
443-870 4 Pikesville MD 876D ONVOY, LLC - MD 238   2014-12-31   
443-870 5 Pikesville MD 876D ONVOY, LLC - MD 238   2014-12-31   
443-873 A Baltimore MD 876D ONVOY, LLC - MD 238      
443-873 2 Baltimore MD 876D ONVOY, LLC - MD 238   2010-04-16   
443-879 2 Dundalk MD 876D ONVOY, LLC - MD 238   2014-09-05   
443-879 7 Dundalk MD 876D ONVOY, LLC - MD 238   2014-12-31   
443-879 8 Dundalk MD 876D ONVOY, LLC - MD 238   2014-12-31   
443-884 4 Baltimore MD 876D ONVOY, LLC - MD 238   2020-05-13   
443-892 7 New Windsor MD 876D ONVOY, LLC - MD 238   2012-10-07   
443-898 4 Pikesville MD 876D ONVOY, LLC - MD 238   2014-09-06   
443-899 1 Waterloo MD 876D ONVOY, LLC - MD 238   2021-05-21   
443-899 3 Waterloo MD 876D ONVOY, LLC - MD 238   2021-07-12   
443-901 3 Towson MD 876D ONVOY, LLC - MD 238   2020-08-09   
443-901 4 Towson MD 876D ONVOY, LLC - MD 238   2020-08-09   

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

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