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
443-659 A West River MD 876D ONVOY, LLC - MD 238      
443-661 8 Waterloo MD 876D ONVOY, LLC - MD 238   2021-04-29   
443-661 9 Waterloo MD 876D ONVOY, LLC - MD 238   2022-09-25   
443-663 3 Woodlawn MD 876D ONVOY, LLC - MD 238   2016-03-14   
443-663 4 Woodlawn MD 876D ONVOY, LLC - MD 238   2015-10-05   
443-663 5 Woodlawn MD 876D ONVOY, LLC - MD 238   2016-03-14   
443-672 4 Parkton MD 876D ONVOY, LLC - MD 238   2019-02-19   
443-672 5 Parkton MD 876D ONVOY, LLC - MD 238   2019-02-19   
443-673 5 Brooklyn Park-Linthicum MD 876D ONVOY, LLC - MD 238   2021-09-23   
443-675 3 Randallstown MD 876D ONVOY, LLC - MD 238   2025-10-30   
443-678 0 Parkville MD 876D ONVOY, LLC - MD 238   2014-08-31   
443-678 5 Parkville MD 876D ONVOY, LLC - MD 238   2024-02-23   
443-688 9 Severn MD 876D ONVOY, LLC - MD 238   2021-03-04   
443-696 8 Dundalk MD 876D ONVOY, LLC - MD 238   2021-09-23   
443-698 5 Odenton MD 876D ONVOY, LLC - MD 238   2024-03-01   
443-698 6 Odenton MD 876D ONVOY, LLC - MD 238   2024-03-01   
443-702 5 Armiger-Gibson Island MD 876D ONVOY, LLC - MD 238   2021-09-23   
443-702 8 Armiger-Gibson Island MD 876D ONVOY, LLC - MD 238   2021-09-23   
443-704 3 Odenton MD 876D ONVOY, LLC - MD 238   2020-06-04   
443-707 2 Aberdeen MD 876D ONVOY, LLC - MD 236   2015-07-29   
443-707 3 Aberdeen MD 876D ONVOY, LLC - MD 236   2015-07-29   
443-712 1 Reisterstown MD 876D ONVOY, LLC - MD 238   2022-04-25   
443-715 4 North East MD 876D ONVOY, LLC - MD 238   2021-04-29   
443-715 6 North East MD 876D ONVOY, LLC - MD 238   2021-04-29   
443-715 8 North East MD 876D ONVOY, LLC - MD 238   2025-09-28   
443-719 1 Jarrettsville MD 876D ONVOY, LLC - MD 238   2021-03-04   
443-720 3 Aberdeen MD 876D ONVOY, LLC - MD 236   2016-02-25   
443-720 7 Aberdeen MD 876D ONVOY, LLC - MD 236   2014-08-30   
443-726 1 Baltimore MD 876D ONVOY, LLC - MD 238   2024-04-12   
443-726 4 Baltimore MD 876D ONVOY, LLC - MD 238   2024-05-11   
443-726 9 Baltimore MD 876D ONVOY, LLC - MD 238   2024-05-11   
443-730 5 Essex MD 876D ONVOY, LLC - MD 238   2016-01-14   
443-730 7 Essex MD 876D ONVOY, LLC - MD 238   2016-03-27   
443-731 0 Port Deposit MD 876D ONVOY, LLC - MD 238   2024-03-03   
443-731 5 Port Deposit MD 876D ONVOY, LLC - MD 238   2018-06-16   
443-732 3 Silver Run MD 876D ONVOY, LLC - MD 238   2012-10-08   
443-733 4 Waterloo MD 876D ONVOY, LLC - MD 238   2016-04-28   
443-733 6 Waterloo MD 876D ONVOY, LLC - MD 238   2016-04-28   
443-734 1 Severn MD 876D ONVOY, LLC - MD 238   2014-09-06   
443-734 3 Severn MD 876D ONVOY, LLC - MD 238   2016-01-22   
443-737 6 Waterloo MD 876D ONVOY, LLC - MD 238   2016-03-21   
443-737 7 Waterloo MD 876D ONVOY, LLC - MD 238   2016-03-21   
443-747 7 Port Deposit MD 876D ONVOY, LLC - MD 238   2012-10-08   
443-748 1 Millersville MD 876D ONVOY, LLC - MD 238   2021-04-02   
443-748 9 Millersville MD 876D ONVOY, LLC - MD 238   2022-11-23   
443-764 8 Glen Burnie MD 876D ONVOY, LLC - MD 238   2012-10-07   
443-767 1 Worthington MD 876D ONVOY, LLC - MD 238   2020-06-11   
443-767 3 Worthington MD 876D ONVOY, LLC - MD 238   2020-06-11   
443-767 4 Worthington MD 876D ONVOY, LLC - MD 238   2012-10-08   
443-770 6 Armiger-Gibson Island MD 876D ONVOY, LLC - MD 238   2014-09-05   

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

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