Local Calling Guide

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
227-777 3 Ashton (Baltimore LATA) MD 624H ONVOY SPECTRUM, LLC 238   2024-01-14   
227-777 4 Ashton (Baltimore LATA) MD 624H ONVOY SPECTRUM, LLC 238   2024-01-14   
227-888 4 Washington Zone 15 (Baltimore LATA) MD 624H ONVOY SPECTRUM, LLC 238   2024-01-14   
227-888 5 Washington Zone 15 (Baltimore LATA) MD 624H ONVOY SPECTRUM, LLC 238   2024-01-14   
240-571 5 Laurel (Baltimore LATA) MD 624H ONVOY SPECTRUM, LLC 238   2021-05-22   
240-742 5 Washington Zone 14 (Baltimore LATA) MD 624H ONVOY SPECTRUM, LLC 238   2022-03-03   
240-742 6 Washington Zone 14 (Baltimore LATA) MD 624H ONVOY SPECTRUM, LLC 238   2021-05-23   
240-742 8 Washington Zone 14 (Baltimore LATA) MD 624H ONVOY SPECTRUM, LLC 238   2022-03-03   
240-749 2 Laurel (Baltimore LATA) MD 624H ONVOY SPECTRUM, LLC 238   2022-03-11   
240-749 6 Laurel (Baltimore LATA) MD 624H ONVOY SPECTRUM, LLC 238   2021-11-15   
240-749 7 Laurel (Baltimore LATA) MD 624H ONVOY SPECTRUM, LLC 238   2021-11-15   
240-759 0 Washington Zone 15 (Baltimore LATA) MD 624H ONVOY SPECTRUM, LLC 238   2022-03-10   
240-759 1 Washington Zone 15 (Baltimore LATA) MD 624H ONVOY SPECTRUM, LLC 238   2022-03-10   
240-759 4 Washington Zone 15 (Baltimore LATA) MD 624H ONVOY SPECTRUM, LLC 238   2022-01-17   
240-759 7 Washington Zone 15 (Baltimore LATA) MD 624H ONVOY SPECTRUM, LLC 238   2021-05-23   
240-820 0 Ashton (Baltimore LATA) MD 624H ONVOY SPECTRUM, LLC 238   2022-03-14   
240-820 1 Ashton (Baltimore LATA) MD 624H ONVOY SPECTRUM, LLC 238   2022-03-14   
240-820 5 Ashton (Baltimore LATA) MD 624H ONVOY SPECTRUM, LLC 238   2021-11-15   
240-820 7 Ashton (Baltimore LATA) MD 624H ONVOY SPECTRUM, LLC 238   2021-11-15   
240-820 8 Ashton (Baltimore LATA) MD 624H ONVOY SPECTRUM, LLC 238   2021-05-23   
240-881 1 Washington Zone 13 (Baltimore LATA) MD 624H ONVOY SPECTRUM, LLC 238   2022-01-20   
240-881 2 Washington Zone 13 (Baltimore LATA) MD 624H ONVOY SPECTRUM, LLC 238   2022-03-14   
240-881 5 Washington Zone 13 (Baltimore LATA) MD 624H ONVOY SPECTRUM, LLC 238   2022-03-14   
240-881 8 Washington Zone 13 (Baltimore LATA) MD 624H ONVOY SPECTRUM, LLC 238   2022-01-20   
301-307 6 Washington Zone 13 (Baltimore LATA) MD 624H ONVOY SPECTRUM, LLC 238   2021-05-23   
301-889 2 Washington Zone 14 (Baltimore LATA) MD 624H ONVOY SPECTRUM, LLC 238   2021-11-08   
301-970 6 Washington Zone 14 (Baltimore LATA) MD 624H ONVOY SPECTRUM, LLC 238   2021-11-08   
410-210 0 Glen Burnie MD 624H ONVOY SPECTRUM, LLC 238   2022-05-18   
410-210 1 Glen Burnie MD 624H ONVOY SPECTRUM, LLC 238   2022-05-18   
410-210 3 Glen Burnie MD 624H ONVOY SPECTRUM, LLC 238   2021-02-24   
410-210 8 Glen Burnie MD 624H ONVOY SPECTRUM, LLC 238   2021-02-24   
410-317 0 Armiger-Gibson Island MD 624H ONVOY SPECTRUM, LLC 238   2022-01-07   
410-317 3 Armiger-Gibson Island MD 624H ONVOY SPECTRUM, LLC 238   2022-01-07   
410-405 3 Fork MD 624H ONVOY SPECTRUM, LLC 238   2021-11-06   
410-405 6 Fork MD 624H ONVOY SPECTRUM, LLC 238   2021-11-06   
410-410 A Baltimore MD 624H ONVOY SPECTRUM, LLC 238      
410-410 0 Baltimore MD 624H ONVOY SPECTRUM, LLC 238   2023-07-21   
410-410 1 Baltimore MD 624H ONVOY SPECTRUM, LLC 238   2023-07-21   
410-410 2 Baltimore MD 624H ONVOY SPECTRUM, LLC 238   2023-07-21   
410-410 3 Baltimore MD 624H ONVOY SPECTRUM, LLC 238   2023-07-21   
410-410 4 Baltimore MD 624H ONVOY SPECTRUM, LLC 238   2023-07-21   
410-410 5 Baltimore MD 624H ONVOY SPECTRUM, LLC 238   2023-07-21   
410-410 6 Baltimore MD 624H ONVOY SPECTRUM, LLC 238   2023-07-21   
410-410 7 Baltimore MD 624H ONVOY SPECTRUM, LLC 238   2023-07-21   
410-410 8 Baltimore MD 624H ONVOY SPECTRUM, LLC 238   2023-07-21   
410-410 9 Baltimore MD 624H ONVOY SPECTRUM, LLC 238   2023-07-21   
410-510 2 Fork MD 624H ONVOY SPECTRUM, LLC 238   2020-07-08   
410-510 4 Fork MD 624H ONVOY SPECTRUM, LLC 238   2020-07-08   
410-510 6 Fork MD 624H ONVOY SPECTRUM, LLC 238   2020-07-08   
410-518 2 Severna Park MD 624H ONVOY SPECTRUM, LLC 238   2024-05-31   
410-518 3 Severna Park MD 624H ONVOY SPECTRUM, LLC 238   2024-05-31   
410-518 4 Severna Park MD 624H ONVOY SPECTRUM, LLC 238   2024-05-31   
410-518 5 Severna Park MD 624H ONVOY SPECTRUM, LLC 238   2024-05-31   
410-559 4 Pikesville MD 624H ONVOY SPECTRUM, LLC 238   2021-11-11   
410-660 4 Elkridge MD 624H ONVOY SPECTRUM, LLC 238   2021-11-06   
410-697 2 Millersville MD 624H ONVOY SPECTRUM, LLC 238   2021-11-11   
410-702 1 Reisterstown MD 624H ONVOY SPECTRUM, LLC 238   2021-05-23   
410-716 9 Towson MD 624H ONVOY SPECTRUM, LLC 238   2024-10-23   
410-753 5 Pikesville MD 624H ONVOY SPECTRUM, LLC 238   2021-11-11   
410-753 7 Pikesville MD 624H ONVOY SPECTRUM, LLC 238   2021-11-11   
410-816 0 Towson MD 624H ONVOY SPECTRUM, LLC 238   2024-10-23   
410-832 9 Towson MD 624H ONVOY SPECTRUM, LLC 238   2024-10-23   
410-841 0 Severna Park MD 624H ONVOY SPECTRUM, LLC 238   2024-05-31   
410-847 0 Towson MD 624H ONVOY SPECTRUM, LLC 238   2024-10-23   
443-228 9 Chase MD 624H ONVOY SPECTRUM, LLC 238   2021-02-24   
443-300 4 Sykesville MD 624H ONVOY SPECTRUM, LLC 238   2021-06-26   
443-343 6 Millersville MD 624H ONVOY SPECTRUM, LLC 238   2021-05-22   
443-407 3 Dundalk MD 624H ONVOY SPECTRUM, LLC 238   2022-03-24   
443-426 3 Randallstown MD 624H ONVOY SPECTRUM, LLC 238   2021-05-23   
443-483 5 Cardiff MD 624H ONVOY SPECTRUM, LLC 238   2022-02-13   
443-483 9 Cardiff MD 624H ONVOY SPECTRUM, LLC 238   2022-02-13   
443-484 9 Edgewood MD 624H ONVOY SPECTRUM, LLC 238   2022-01-27   
443-485 2 Elkton MD 624H ONVOY SPECTRUM, LLC 238   2021-12-09   
443-485 3 Elkton MD 624H ONVOY SPECTRUM, LLC 238   2021-11-26   
443-543 7 Arbutus MD 624H ONVOY SPECTRUM, LLC 238   2021-11-26   
443-575 1 Arbutus MD 624H ONVOY SPECTRUM, LLC 238   2021-02-24   
443-575 3 Arbutus MD 624H ONVOY SPECTRUM, LLC 238   2021-02-24   
443-575 8 Arbutus MD 624H ONVOY SPECTRUM, LLC 238   2021-02-24   
443-575 9 Arbutus MD 624H ONVOY SPECTRUM, LLC 238   2021-05-23   
443-581 5 Chase MD 624H ONVOY SPECTRUM, LLC 238   2021-02-24   
443-582 7 Churchville MD 624H ONVOY SPECTRUM, LLC 238   2021-05-28   
443-584 0 Crofton MD 624H ONVOY SPECTRUM, LLC 238   2021-05-22   
443-590 2 Reisterstown MD 624H ONVOY SPECTRUM, LLC 238   2021-09-10   
443-592 0 Elkridge MD 624H ONVOY SPECTRUM, LLC 238   2022-03-18   
443-592 1 Elkridge MD 624H ONVOY SPECTRUM, LLC 238   2022-01-16   
443-592 2 Elkridge MD 624H ONVOY SPECTRUM, LLC 238   2022-03-18   
443-592 4 Elkridge MD 624H ONVOY SPECTRUM, LLC 238   2022-01-16   
443-626 1 Chase MD 624H ONVOY SPECTRUM, LLC 238   2020-07-08   
443-626 3 Chase MD 624H ONVOY SPECTRUM, LLC 238   2020-07-08   
443-626 9 Chase MD 624H ONVOY SPECTRUM, LLC 238   2020-07-08   
443-656 1 Columbia MD 624H ONVOY SPECTRUM, LLC 238   2021-05-22   
443-673 1 Brooklyn Park-Linthicum MD 624H ONVOY SPECTRUM, LLC 238   2021-05-22   
443-689 9 Cockeysville MD 624H ONVOY SPECTRUM, LLC 238   2021-05-22   
443-696 1 Dundalk MD 624H ONVOY SPECTRUM, LLC 238   2021-11-25   
443-696 5 Dundalk MD 624H ONVOY SPECTRUM, LLC 238   2021-11-25   
443-709 1 Arbutus MD 624H ONVOY SPECTRUM, LLC 238   2021-12-30   
443-709 6 Arbutus MD 624H ONVOY SPECTRUM, LLC 238   2021-05-23   
443-740 8 Baltimore MD 624H ONVOY SPECTRUM, LLC 238   2024-10-23   
443-748 5 Millersville MD 624H ONVOY SPECTRUM, LLC 238   2022-02-05   
443-781 1 Armiger-Gibson Island MD 624H ONVOY SPECTRUM, LLC 238   2022-02-11   

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Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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