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
667-433 2 Catonsville MD 876D ONVOY, LLC - MD 238   2023-08-10   
667-435 A Baltimore MD 876D ONVOY, LLC - MD 238      
667-435 2 Baltimore MD 876D ONVOY, LLC - MD 238   2023-07-21   
667-436 0 Towson MD 876D ONVOY, LLC - MD 238   2024-12-14   
667-436 1 Towson MD 876D ONVOY, LLC - MD 238   2024-12-14   
667-436 3 Towson MD 876D ONVOY, LLC - MD 238   2024-04-19   
667-436 4 Towson MD 876D ONVOY, LLC - MD 238   2024-04-19   
667-436 5 Towson MD 876D ONVOY, LLC - MD 238   2024-04-19   
667-436 6 Towson MD 876D ONVOY, LLC - MD 238   2025-11-28   
667-440 A Baltimore MD 876D ONVOY, LLC - MD 238      
667-440 0 Baltimore MD 876D ONVOY, LLC - MD 238   2023-09-26   
667-440 1 Baltimore MD 876D ONVOY, LLC - MD 238   2023-09-26   
667-440 2 Baltimore MD 876D ONVOY, LLC - MD 238   2023-09-25   
667-440 3 Baltimore MD 876D ONVOY, LLC - MD 238   2023-09-25   
667-440 4 Baltimore MD 876D ONVOY, LLC - MD 238   2023-09-25   
667-441 6 Parkville MD 876D ONVOY, LLC - MD 238   2024-02-23   
667-441 7 Parkville MD 876D ONVOY, LLC - MD 238   2024-02-23   
667-442 3 Essex MD 876D ONVOY, LLC - MD 238   2024-02-25   
667-442 4 Essex MD 876D ONVOY, LLC - MD 238   2024-02-25   
667-442 8 Essex MD 876D ONVOY, LLC - MD 238   2024-07-29   
667-444 A Baltimore MD 876D ONVOY, LLC - MD 238      
667-444 4 Baltimore MD 876D ONVOY, LLC - MD 238   2015-10-15   
667-444 5 Baltimore MD 876D ONVOY, LLC - MD 238   2015-10-15   
667-446 1 Elkridge MD 876D ONVOY, LLC - MD 238   2023-08-10   
667-446 2 Elkridge MD 876D ONVOY, LLC - MD 238   2023-08-10   
667-446 3 Elkridge MD 876D ONVOY, LLC - MD 238   2023-08-10   
667-446 4 Elkridge MD 876D ONVOY, LLC - MD 238   2023-08-10   
667-446 5 Elkridge MD 876D ONVOY, LLC - MD 238   2023-08-10   
667-446 7 Elkridge MD 876D ONVOY, LLC - MD 238   2024-03-09   
667-447 1 Columbia MD 876D ONVOY, LLC - MD 238   2025-09-06   
667-447 2 Columbia MD 876D ONVOY, LLC - MD 238   2024-12-01   
667-448 0 Reisterstown MD 876D ONVOY, LLC - MD 238   2024-11-04   
667-448 1 Reisterstown MD 876D ONVOY, LLC - MD 238   2025-07-20   
667-451 0 Fork MD 876D ONVOY, LLC - MD 238   2024-04-19   
667-451 1 Fork MD 876D ONVOY, LLC - MD 238   2025-07-20   
667-452 3 Catonsville MD 876D ONVOY, LLC - MD 238   2024-02-26   
667-452 4 Catonsville MD 876D ONVOY, LLC - MD 238   2024-02-26   
667-452 5 Catonsville MD 876D ONVOY, LLC - MD 238   2024-02-26   
667-452 6 Catonsville MD 876D ONVOY, LLC - MD 238   2024-02-26   
667-453 3 Prince Frederick MD 876D ONVOY, LLC - MD 238   2024-03-01   
667-453 4 Prince Frederick MD 876D ONVOY, LLC - MD 238   2024-03-01   
667-453 5 Prince Frederick MD 876D ONVOY, LLC - MD 238   2024-03-01   
667-453 6 Prince Frederick MD 876D ONVOY, LLC - MD 238   2024-04-05   
667-453 7 Prince Frederick MD 876D ONVOY, LLC - MD 238   2024-04-05   
667-454 1 Bel Air MD 876D ONVOY, LLC - MD 238   2024-02-29   
667-454 3 Bel Air MD 876D ONVOY, LLC - MD 238   2024-02-29   
667-454 4 Bel Air MD 876D ONVOY, LLC - MD 238   2024-02-29   
667-455 0 Edgewood MD 876D ONVOY, LLC - MD 238   2024-02-26   
667-455 1 Edgewood MD 876D ONVOY, LLC - MD 238   2024-02-26   
667-455 2 Edgewood MD 876D ONVOY, LLC - MD 238   2024-02-26   

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

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