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
443-901 5 Towson MD 876D ONVOY, LLC - MD 238   2020-08-09   
443-903 2 Bel Air MD 876D ONVOY, LLC - MD 238   2012-10-07   
443-903 3 Bel Air MD 876D ONVOY, LLC - MD 238   2016-01-18   
443-909 1 Baltimore MD 876D ONVOY, LLC - MD 238   2024-07-12   
443-909 2 Baltimore MD 876D ONVOY, LLC - MD 238   2024-07-12   
443-909 3 Baltimore MD 876D ONVOY, LLC - MD 238   2024-07-12   
443-909 4 Baltimore MD 876D ONVOY, LLC - MD 238   2024-07-12   
443-909 5 Baltimore MD 876D ONVOY, LLC - MD 238   2024-07-12   
443-912 5 Towson MD 876D ONVOY, LLC - MD 238   2015-07-29   
443-917 A Columbia MD 876D ONVOY, LLC - MD 238      
443-917 3 Columbia MD 876D ONVOY, LLC - MD 238   2012-02-29   
443-920 7 Sykesville MD 876D ONVOY, LLC - MD 238   2016-03-25   
443-920 8 Sykesville MD 876D ONVOY, LLC - MD 238   2016-03-25   
443-933 8 Cockeysville MD 876D ONVOY, LLC - MD 238   2014-12-31   
443-933 9 Cockeysville MD 876D ONVOY, LLC - MD 238   2014-12-31   
443-937 2 Union Bridge MD 876D ONVOY, LLC - MD 238   2012-10-08   
443-940 5 Pikesville MD 876D ONVOY, LLC - MD 238   2021-09-23   
443-940 6 Pikesville MD 876D ONVOY, LLC - MD 238   2021-09-23   
443-941 0 Elkton MD 876D ONVOY, LLC - MD 238   2012-10-07   
443-947 3 Perryville MD 876D ONVOY, LLC - MD 238   2016-08-05   
443-947 4 Perryville MD 876D ONVOY, LLC - MD 238   2016-08-05   
443-951 3 Annapolis MD 876D ONVOY, LLC - MD 238   2014-10-25   
443-952 2 Westminster MD 876D ONVOY, LLC - MD 238   2016-03-10   
443-952 4 Westminster MD 876D ONVOY, LLC - MD 238   2015-10-05   
443-952 6 Westminster MD 876D ONVOY, LLC - MD 238   2014-09-05   
443-957 0 Baltimore MD 876D ONVOY, LLC - MD 238   2025-01-06   
443-957 3 Baltimore MD 876D ONVOY, LLC - MD 238   2025-01-06   
443-960 7 Glen Burnie MD 876D ONVOY, LLC - MD 238   2014-12-31   
443-960 8 Glen Burnie MD 876D ONVOY, LLC - MD 238   2014-12-31   
443-963 3 Baltimore MD 876D ONVOY, LLC - MD 238   2012-05-19   
443-966 6 Fallston MD 876D ONVOY, LLC - MD 238   2021-03-04   
443-967 5 North East MD 876D ONVOY, LLC - MD 238   2016-03-21   
443-967 6 North East MD 876D ONVOY, LLC - MD 238   2016-03-21   
443-968 7 Prince Frederick MD 876D ONVOY, LLC - MD 238   2012-10-08   
443-969 7 Essex MD 876D ONVOY, LLC - MD 238   2014-10-16   
443-969 8 Essex MD 876D ONVOY, LLC - MD 238   2014-10-16   
443-971 3 Taneytown MD 876D ONVOY, LLC - MD 238   2012-10-08   
443-971 7 Taneytown MD 876D ONVOY, LLC - MD 238   2020-06-04   
443-973 4 Ellicott City MD 876D ONVOY, LLC - MD 238   2014-09-05   
443-973 5 Ellicott City MD 876D ONVOY, LLC - MD 238   2014-10-17   
443-979 8 Columbia MD 876D ONVOY, LLC - MD 238   2014-10-20   
443-979 9 Columbia MD 876D ONVOY, LLC - MD 238   2014-10-20   
443-981 2 Fallston MD 876D ONVOY, LLC - MD 238   2012-10-07   
443-991 8 Towson MD 876D ONVOY, LLC - MD 238   2012-02-29   
443-993 5 Elkton MD 876D ONVOY, LLC - MD 238   2014-10-28   
443-993 8 Elkton MD 876D ONVOY, LLC - MD 238   2014-10-28   
443-998 2 Parkville MD 876D ONVOY, LLC - MD 238   2024-02-23   
443-998 4 Parkville MD 876D ONVOY, LLC - MD 238   2024-02-23   
443-998 5 Parkville MD 876D ONVOY, LLC - MD 238   2024-02-23   
443-998 6 Parkville MD 876D ONVOY, LLC - MD 238   2024-02-23   

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

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