Local Calling Guide

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OCN: 876D ONVOY, LLC - MD

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
667-503 7 Baltimore MD BLTMMDCH42Z  238   2025-03-24   
667-503 8 Baltimore MD BLTMMDCH42Z  238   2025-03-24   
667-503 9 Baltimore MD BLTMMDCH42Z  238   2025-03-24   
667-506 0 Baltimore MD BLTMMDCH42Z  238   2025-05-05   
667-506 1 Baltimore MD BLTMMDCH42Z  238   2025-05-05   
667-508 0 Woodlawn MD BLTMMDCH42Z  238   2025-07-20   
667-508 1 Woodlawn MD BLTMMDCH42Z  238   2025-09-06   
667-508 2 Woodlawn MD BLTMMDCH42Z  238   2025-10-12   
667-508 3 Woodlawn MD BLTMMDCH42Z  238   2026-06-22   
667-509 0 Severna Park MD BLTMMDCH42Z  238   2025-09-28   
667-509 3 Severna Park MD BLTMMDCH42Z  238   2026-06-22   
667-517 8 Catonsville MD   238   2026-08-15   
667-525 A Baltimore MD BLTMMDCH42Z  238   2025-10-04   
667-525 0 Baltimore MD BLTMMDCH42Z  238   2025-10-04   
667-525 6 Baltimore MD BLTMMDCH42Z  238   2025-11-08   
667-525 7 Baltimore MD BLTMMDCH42Z  238   2025-10-18   
667-525 8 Baltimore MD BLTMMDCH42Z  238   2025-10-18   
667-525 9 Baltimore MD BLTMMDCH42Z  238   2025-10-18   
667-526 2 Centreville MD SLBRMDSBXVX  242   2024-03-07   
667-526 4 Centreville MD SLBRMDSBXVX  242   2024-06-23   
667-526 8 Centreville MD   242   2026-08-15   
667-527 8 Glen Burnie MD BLTMMDCH42Z  238   2026-01-04   
667-529 4 Hurlock MD SLBRMDSBXVX  242   2021-08-06   
667-529 5 Hurlock MD SLBRMDSBXVX  242   2021-08-06   
667-529 6 Hurlock MD SLBRMDSBXVX  242   2022-03-13   
667-529 7 Hurlock MD SLBRMDSBXVX  242   2022-03-13   
667-532 A Parkville MD BLTMMDCH42Z  238   2025-12-26   
667-532 0 Parkville MD BLTMMDCH42Z  238   2025-12-26   
667-532 6 Parkville MD   238   2026-08-21   
667-532 7 Parkville MD   238   2026-08-21   
667-537 0 Essex MD   238   2026-08-21   
667-538 A Churchville MD BLTMMDCH42Z  238   2026-03-20   
667-538 0 Churchville MD BLTMMDCH42Z  238   2026-03-20   
667-538 1 Churchville MD   238   2026-08-15   
667-541 0 Glen Burnie MD   238   2026-08-21   
667-541 1 Glen Burnie MD   238   2026-08-21   
667-545 6 Warwick MD SLBRMDSBXVX  242   2021-04-02   
667-545 7 Warwick MD SLBRMDSBXVX  242   2021-04-02   
667-545 8 Warwick MD SLBRMDSBXVX  242   2019-03-10   
667-545 9 Warwick MD SLBRMDSBXVX  242   2019-03-10   
667-547 8 Baltimore MD   238   2026-07-22   
667-547 9 Baltimore MD   238   2026-07-22   
667-548 A Towson MD BLTMMDCH42Z  238   2026-07-23   
667-548 0 Towson MD BLTMMDCH42Z  238   2026-07-23   
667-549 0 Annapolis MD   238   2026-07-24   
667-551 A Annapolis MD   238   2026-08-29   
667-551 0 Annapolis MD   238   2026-08-29   
667-551 1 Annapolis MD   238   2026-08-29   
667-551 2 Annapolis MD   238   2026-08-29   
667-551 3 Annapolis MD   238   2026-08-29   

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Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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