Local Calling Guide

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OCN: 876D ONVOY, LLC - MD

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
443-933 8 Cockeysville MD   238   2014-12-31   
443-933 9 Cockeysville MD   238   2014-12-31   
443-937 2 Union Bridge MD   238   2012-10-08   
443-940 5 Pikesville MD   238   2021-09-23   
443-940 6 Pikesville MD   238   2021-09-23   
443-941 0 Elkton MD   238   2012-10-07   
443-947 3 Perryville MD   238   2016-08-05   
443-947 4 Perryville MD   238   2016-08-05   
443-951 3 Annapolis MD   238   2014-10-25   
443-952 2 Westminster MD   238   2016-03-10   
443-952 4 Westminster MD   238   2015-10-05   
443-952 6 Westminster MD   238   2014-09-05   
443-957 0 Baltimore MD   238   2025-01-06   
443-957 3 Baltimore MD   238   2025-01-06   
443-960 7 Glen Burnie MD   238   2014-12-31   
443-960 8 Glen Burnie MD   238   2014-12-31   
443-963 3 Baltimore MD   238   2012-05-19   
443-966 6 Fallston MD   238   2021-03-04   
443-967 5 North East MD   238   2016-03-21   
443-967 6 North East MD   238   2016-03-21   
443-968 7 Prince Frederick MD   238   2012-10-08   
443-969 7 Essex MD   238   2014-10-16   
443-969 8 Essex MD   238   2014-10-16   
443-971 3 Taneytown MD   238   2012-10-08   
443-971 7 Taneytown MD   238   2020-06-04   
443-972 5 Cambridge MD   242   2017-04-13   
443-973 4 Ellicott City MD   238   2014-09-05   
443-973 5 Ellicott City MD   238   2014-10-17   
443-978 4 Salisbury MD   242   2024-02-25   
443-978 5 Salisbury MD   242   2024-02-25   
443-979 8 Columbia MD   238   2014-10-20   
443-979 9 Columbia MD   238   2014-10-20   
443-981 2 Fallston MD   238   2012-10-07   
443-988 7 Centreville MD   242   2017-04-13   
443-991 8 Towson MD   238   2012-02-29   
443-993 5 Elkton MD   238   2014-10-28   
443-993 8 Elkton MD   238   2014-10-28   
443-998 2 Parkville MD   238   2024-02-23   
443-998 4 Parkville MD   238   2024-02-23   
443-998 5 Parkville MD   238   2024-02-23   
443-998 6 Parkville MD   238   2024-02-23   
443-998 7 Parkville MD   238   2016-01-11   
443-998 8 Parkville MD   238   2014-12-31   
443-998 9 Parkville MD   238   2014-12-31   
667-200 A Columbia MD BLTMMDCH42Z  238      
667-200 0 Columbia MD   238   2016-02-18   
667-200 1 Columbia MD   238   2016-04-28   
667-200 2 Columbia MD   238   2016-04-28   
667-200 3 Columbia MD   238   2017-06-18   
667-201 5 Bel Air MD   238   2018-05-27   

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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