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
410-346 9 Silver Run MD 876D ONVOY, LLC - MD 238   2016-03-28   
410-401 5 Brooklyn Park-Linthicum MD 876D ONVOY, LLC - MD 238   2016-03-30   
410-401 8 Brooklyn Park-Linthicum MD 876D ONVOY, LLC - MD 238   2016-03-24   
410-403 0 Cockeysville MD 876D ONVOY, LLC - MD 238   2016-03-28   
410-403 3 Cockeysville MD 876D ONVOY, LLC - MD 238   2016-03-09   
410-403 4 Cockeysville MD 876D ONVOY, LLC - MD 238   2016-03-28   
410-403 5 Cockeysville MD 876D ONVOY, LLC - MD 238   2024-04-26   
410-406 1 Essex MD 876D ONVOY, LLC - MD 238   2016-03-08   
410-406 6 Essex MD 876D ONVOY, LLC - MD 238   2017-06-02   
410-413 3 Pikesville MD 876D ONVOY, LLC - MD 238   2016-03-05   
410-413 7 Pikesville MD 876D ONVOY, LLC - MD 238   2017-06-02   
410-421 0 Severna Park MD 876D ONVOY, LLC - MD 238   2024-03-01   
410-421 1 Severna Park MD 876D ONVOY, LLC - MD 238   2024-03-01   
410-421 7 Severna Park MD 876D ONVOY, LLC - MD 238   2015-08-05   
410-424 6 Glen Burnie MD 876D ONVOY, LLC - MD 238   2015-05-11   
410-429 1 Worthington MD 876D ONVOY, LLC - MD 238   2016-04-11   
410-429 2 Worthington MD 876D ONVOY, LLC - MD 238   2016-04-11   
410-431 0 Severna Park MD 876D ONVOY, LLC - MD 238   2016-03-28   
410-431 2 Severna Park MD 876D ONVOY, LLC - MD 238   2016-04-04   
410-431 3 Severna Park MD 876D ONVOY, LLC - MD 238   2016-04-04   
410-432 0 Severna Park MD 876D ONVOY, LLC - MD 238   2024-05-23   
410-432 1 Severna Park MD 876D ONVOY, LLC - MD 238   2024-07-05   
410-449 7 Solomons MD 876D ONVOY, LLC - MD 238   2012-10-08   
410-452 3 Cardiff MD 876D ONVOY, LLC - MD 238   2016-04-04   
410-452 6 Cardiff MD 876D ONVOY, LLC - MD 238   2016-04-04   
410-453 1 Towson MD 876D ONVOY, LLC - MD 238   2024-02-19   
410-453 8 Towson MD 876D ONVOY, LLC - MD 238   2024-02-19   
410-457 3 Darlington MD 876D ONVOY, LLC - MD 238   2012-10-08   
410-469 8 Baltimore MD 876D ONVOY, LLC - MD 238   2015-02-23   
410-489 3 Glenwood MD 876D ONVOY, LLC - MD 238   2016-04-04   
410-498 5 Cockeysville MD 876D ONVOY, LLC - MD 238   2020-07-05   
410-498 6 Cockeysville MD 876D ONVOY, LLC - MD 238   2020-07-05   
410-498 7 Cockeysville MD 876D ONVOY, LLC - MD 238   2020-07-05   
410-498 8 Cockeysville MD 876D ONVOY, LLC - MD 238   2020-07-05   
410-500 9 Baltimore MD 876D ONVOY, LLC - MD 238   2016-03-26   
410-510 8 Fork MD 876D ONVOY, LLC - MD 238   2022-10-17   
410-512 9 Towson MD 876D ONVOY, LLC - MD 238   2024-04-07   
410-513 5 Parkville MD 876D ONVOY, LLC - MD 238   2016-03-08   
410-514 3 Severn MD 876D ONVOY, LLC - MD 238   2016-03-14   
410-517 7 Reisterstown MD 876D ONVOY, LLC - MD 238   2016-03-08   
410-538 1 Fork MD 876D ONVOY, LLC - MD 238   2024-03-07   
410-541 1 Severna Park MD 876D ONVOY, LLC - MD 238   2016-03-03   
410-541 4 Severna Park MD 876D ONVOY, LLC - MD 238   2021-03-04   
410-541 5 Severna Park MD 876D ONVOY, LLC - MD 238   2021-03-04   
410-541 7 Severna Park MD 876D ONVOY, LLC - MD 238   2021-03-04   
410-541 8 Severna Park MD 876D ONVOY, LLC - MD 238   2024-12-14   
410-553 5 Glen Burnie MD 876D ONVOY, LLC - MD 238   2016-03-18   
410-559 9 Pikesville MD 876D ONVOY, LLC - MD 238   2016-03-31   
410-564 1 Elkridge MD 876D ONVOY, LLC - MD 238   2022-08-21   
410-567 0 Elkridge MD 876D ONVOY, LLC - MD 238   2013-11-16   

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

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