Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

OCN: 490J DISH WIRELESS, LLC

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
667-384 8 Salisbury MD   242   2022-06-06   
667-385 A Solomons MD BLTQMD019MD  238      
667-385 8 Solomons MD   238   2022-06-06   
667-389 7 Cambridge MD   242   2022-12-20   
667-417 3 Glen Burnie MD   238   2025-01-19   
667-417 4 Glen Burnie MD   238   2025-03-24   
667-417 5 Glen Burnie MD   238   2025-05-26   
667-417 8 Glen Burnie MD   238   2023-03-13   
667-417 9 Glen Burnie MD   238   2023-07-01   
667-420 A Federalsburg MD SLBRMD908MD  242      
667-420 9 Federalsburg MD   242   2023-01-26   
667-421 0 Columbia MD   238   2024-01-21   
667-421 1 Columbia MD   238   2024-04-26   
667-427 0 West River MD   238   2023-06-30   
667-447 0 Columbia MD   238   2024-09-22   
667-447 8 Columbia MD   238   2025-01-22   
667-462 A Elkton MD BLTQMD019MD  238   2024-02-04   
667-462 0 Elkton MD   238   2024-02-04   
667-466 1 Havre de Grace MD   238   2023-03-12   
667-484 A Westminster MD BLTQMD019MD  238   2024-07-12   
667-484 0 Westminster MD   238   2024-07-12   
667-484 1 Westminster MD   238   2024-07-12   
667-487 0 Baltimore MD   238   2024-10-16   
667-487 2 Baltimore MD   238   2024-12-16   
667-495 4 Baltimore MD   238   2025-01-31   
667-495 5 Baltimore MD   238   2025-02-24   
667-495 6 Baltimore MD   238   2025-03-24   
667-495 7 Baltimore MD   238   2025-04-28   
667-495 8 Baltimore MD   238   2025-05-26   
667-495 9 Baltimore MD   238   2025-06-23   
667-502 2 Columbia MD   238   2025-08-25   
667-502 3 Columbia MD   238   2025-09-29   
667-502 4 Columbia MD   238   2025-10-27   
667-519 0 Baltimore MD   238   2025-08-25   
667-519 1 Baltimore MD   238   2025-09-29   
667-519 2 Baltimore MD   238   2025-10-27   
667-519 3 Baltimore MD   238   2025-11-24   
667-527 A Glen Burnie MD   238   2025-11-01   
667-527 0 Glen Burnie MD   238   2025-11-01   
667-527 1 Glen Burnie MD   238   2025-12-18   
667-527 2 Glen Burnie MD   238   2026-02-12   
667-527 3 Glen Burnie MD   238   2026-01-23   
667-527 4 Glen Burnie MD   238   2026-01-23   
667-527 5 Glen Burnie MD   238   2026-02-10   
667-527 6 Glen Burnie MD   238   2026-02-10   
667-527 7 Glen Burnie MD   238   2026-03-10   
667-535 A Rising Sun MD   238   2026-02-05   
667-535 0 Rising Sun MD   238   2026-02-05   
667-535 1 Rising Sun MD   238   2026-03-23   
667-536 A Still Pond MD   242   2026-03-05   

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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