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
667-339 1 Sykesville MD 624H ONVOY SPECTRUM, LLC 238   2021-11-26   
667-339 4 Sykesville MD 624H ONVOY SPECTRUM, LLC 238   2022-03-24   
667-339 5 Sykesville MD 624H ONVOY SPECTRUM, LLC 238   2022-03-24   
667-339 6 Sykesville MD 624H ONVOY SPECTRUM, LLC 238   2022-02-12   
667-339 7 Sykesville MD 624H ONVOY SPECTRUM, LLC 238   2022-02-12   
667-340 0 Churchville MD 624H ONVOY SPECTRUM, LLC 238   2021-11-26   
667-340 1 Churchville MD 624H ONVOY SPECTRUM, LLC 238   2021-11-26   
667-345 2 Catonsville MD 624H ONVOY SPECTRUM, LLC 238   2021-11-21   
667-353 2 Cardiff MD 624H ONVOY SPECTRUM, LLC 238   2021-05-22   
667-356 3 Severn MD 624H ONVOY SPECTRUM, LLC 238   2021-05-23   
667-359 6 Columbia MD 624H ONVOY SPECTRUM, LLC 238   2022-01-15   
667-359 7 Columbia MD 624H ONVOY SPECTRUM, LLC 238   2022-01-15   
667-360 3 Odenton MD 624H ONVOY SPECTRUM, LLC 238   2021-05-23   
667-360 7 Odenton MD 624H ONVOY SPECTRUM, LLC 238   2022-01-28   
667-360 8 Odenton MD 624H ONVOY SPECTRUM, LLC 238   2022-01-28   
667-363 1 Sherwood Forest MD 624H ONVOY SPECTRUM, LLC 238   2022-03-07   
667-363 2 Sherwood Forest MD 624H ONVOY SPECTRUM, LLC 238   2022-03-07   
667-363 7 Sherwood Forest MD 624H ONVOY SPECTRUM, LLC 238   2021-05-23   
667-368 3 Elkton MD 624H ONVOY SPECTRUM, LLC 238   2022-03-27   
667-368 4 Elkton MD 624H ONVOY SPECTRUM, LLC 238   2022-03-27   
667-368 6 Elkton MD 624H ONVOY SPECTRUM, LLC 238   2022-02-10   
667-368 7 Elkton MD 624H ONVOY SPECTRUM, LLC 238   2022-02-10   
667-369 1 Catonsville MD 624H ONVOY SPECTRUM, LLC 238   2022-03-24   
667-369 2 Catonsville MD 624H ONVOY SPECTRUM, LLC 238   2022-03-24   
667-369 3 Catonsville MD 624H ONVOY SPECTRUM, LLC 238   2022-02-10   
667-369 4 Catonsville MD 624H ONVOY SPECTRUM, LLC 238   2022-02-10   
667-370 6 Parkton MD 624H ONVOY SPECTRUM, LLC 238   2021-05-23   
667-371 3 Ellicott City MD 624H ONVOY SPECTRUM, LLC 238   2022-03-21   
667-371 4 Ellicott City MD 624H ONVOY SPECTRUM, LLC 238   2022-03-21   
667-371 6 Ellicott City MD 624H ONVOY SPECTRUM, LLC 238   2022-02-07   
667-371 7 Ellicott City MD 624H ONVOY SPECTRUM, LLC 238   2022-02-07   
667-374 8 Waterloo MD 624H ONVOY SPECTRUM, LLC 238   2022-02-11   
667-374 9 Waterloo MD 624H ONVOY SPECTRUM, LLC 238   2022-02-11   
667-378 6 Essex MD 624H ONVOY SPECTRUM, LLC 238   2022-01-22   
667-380 6 Annapolis MD 624H ONVOY SPECTRUM, LLC 238   2022-01-22   
667-380 7 Annapolis MD 624H ONVOY SPECTRUM, LLC 238   2022-01-22   
667-381 3 Parkville MD 624H ONVOY SPECTRUM, LLC 238   2022-02-26   
667-381 5 Parkville MD 624H ONVOY SPECTRUM, LLC 238   2022-01-22   
667-381 6 Parkville MD 624H ONVOY SPECTRUM, LLC 238   2022-01-22   
667-383 1 Towson MD 624H ONVOY SPECTRUM, LLC 238   2022-03-20   
667-383 2 Towson MD 624H ONVOY SPECTRUM, LLC 238   2022-03-20   
667-387 2 Perryville MD 624H ONVOY SPECTRUM, LLC 238   2022-03-06   
667-387 3 Perryville MD 624H ONVOY SPECTRUM, LLC 238   2021-05-23   
667-387 4 Perryville MD 624H ONVOY SPECTRUM, LLC 238   2022-03-24   
667-388 6 Severn MD 624H ONVOY SPECTRUM, LLC 238   2022-01-30   
667-388 8 Severn MD 624H ONVOY SPECTRUM, LLC 238   2022-01-30   
667-396 1 Port Deposit MD 624H ONVOY SPECTRUM, LLC 238   2022-02-05   
667-396 2 Port Deposit MD 624H ONVOY SPECTRUM, LLC 238   2022-02-05   
667-396 3 Port Deposit MD 624H ONVOY SPECTRUM, LLC 238   2021-05-23   
667-397 3 Solomons MD 624H ONVOY SPECTRUM, LLC 238   2021-05-23   

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Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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