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
857-388 6 Somerville MA 624H ONVOY SPECTRUM, LLC 128   2022-01-15   
857-391 2 Charlestown MA 624H ONVOY SPECTRUM, LLC 128   2022-02-11   
857-391 3 Charlestown MA 624H ONVOY SPECTRUM, LLC 128   2022-02-11   
857-392 0 Jamaica Plain MA 624H ONVOY SPECTRUM, LLC 128   2022-03-21   
857-392 1 Jamaica Plain MA 624H ONVOY SPECTRUM, LLC 128   2022-03-21   
857-392 7 Jamaica Plain MA 624H ONVOY SPECTRUM, LLC 128   2021-11-19   
857-392 8 Jamaica Plain MA 624H ONVOY SPECTRUM, LLC 128   2021-11-19   
857-394 7 Belmont MA 624H ONVOY SPECTRUM, LLC 128   2022-04-05   
857-394 8 Belmont MA 624H ONVOY SPECTRUM, LLC 128   2022-04-05   
857-419 2 Milton MA 624H ONVOY SPECTRUM, LLC 128   2021-04-11   
857-422 8 South Boston MA 624H ONVOY SPECTRUM, LLC 128   2021-11-27   
857-422 9 South Boston MA 624H ONVOY SPECTRUM, LLC 128   2021-11-27   
857-425 5 Brighton MA 624H ONVOY SPECTRUM, LLC 128   2021-04-05   
857-427 3 Boston MA 624H ONVOY SPECTRUM, LLC 128   2024-12-19   
857-428 7 Everett MA 624H ONVOY SPECTRUM, LLC 128   2024-12-06   
857-428 8 Everett MA 624H ONVOY SPECTRUM, LLC 128   2024-12-06   
857-428 9 Everett MA 624H ONVOY SPECTRUM, LLC 128   2024-12-06   
857-429 2 Roxbury MA 624H ONVOY SPECTRUM, LLC 128   2024-12-30   
857-429 3 Roxbury MA 624H ONVOY SPECTRUM, LLC 128   2024-12-30   
857-429 4 Roxbury MA 624H ONVOY SPECTRUM, LLC 128   2024-12-30   
857-466 4 Hyde Park MA 624H ONVOY SPECTRUM, LLC 128   2024-12-06   
857-466 5 Hyde Park MA 624H ONVOY SPECTRUM, LLC 128   2024-12-06   
857-467 0 Somerville MA 624H ONVOY SPECTRUM, LLC 128   2024-05-22   
857-467 4 Somerville MA 624H ONVOY SPECTRUM, LLC 128   2024-05-22   
857-475 0 Chelsea MA 624H ONVOY SPECTRUM, LLC 128   2021-11-27   
857-475 1 Chelsea MA 624H ONVOY SPECTRUM, LLC 128   2021-11-27   
857-475 3 Chelsea MA 624H ONVOY SPECTRUM, LLC 128   2024-12-06   
857-475 4 Chelsea MA 624H ONVOY SPECTRUM, LLC 128   2024-12-06   
857-475 5 Chelsea MA 624H ONVOY SPECTRUM, LLC 128   2024-12-06   
857-497 5 Charlestown MA 624H ONVOY SPECTRUM, LLC 128   2024-12-06   
857-497 6 Charlestown MA 624H ONVOY SPECTRUM, LLC 128   2024-12-06   
857-497 7 Charlestown MA 624H ONVOY SPECTRUM, LLC 128   2024-12-06   
857-597 1 Winthrop MA 624H ONVOY SPECTRUM, LLC 128   2021-11-27   
857-597 9 Winthrop MA 624H ONVOY SPECTRUM, LLC 128   2021-11-27   
857-605 7 Brighton MA 624H ONVOY SPECTRUM, LLC 128   2024-12-06   
857-605 8 Brighton MA 624H ONVOY SPECTRUM, LLC 128   2024-12-06   
857-688 1 Dorchester MA 624H ONVOY SPECTRUM, LLC 128   2022-03-20   
857-688 2 Dorchester MA 624H ONVOY SPECTRUM, LLC 128   2022-03-20   
857-688 6 Dorchester MA 624H ONVOY SPECTRUM, LLC 128   2022-02-07   
857-688 7 Dorchester MA 624H ONVOY SPECTRUM, LLC 128   2022-02-07   
857-693 6 Roxbury MA 624H ONVOY SPECTRUM, LLC 128   2022-04-20   
857-737 4 Watertown MA 624H ONVOY SPECTRUM, LLC 128   2024-12-06   
857-754 8 Quincy MA 624H ONVOY SPECTRUM, LLC 128   2021-04-12   
857-766 2 South Boston MA 624H ONVOY SPECTRUM, LLC 128   2021-09-03   
857-766 4 South Boston MA 624H ONVOY SPECTRUM, LLC 128   2021-04-12   
857-788 1 Boston MA 624H ONVOY SPECTRUM, LLC 128   2022-03-17   
857-788 2 Boston MA 624H ONVOY SPECTRUM, LLC 128   2022-03-17   
857-799 1 Cambridge MA 624H ONVOY SPECTRUM, LLC 128   2022-02-25   
857-822 A Somerville MA 624H ONVOY SPECTRUM, LLC 128   2025-01-03   
857-822 7 Somerville MA 624H ONVOY SPECTRUM, LLC 128   2025-01-03   

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Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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