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.
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Switch: BLTMMDCHX7X

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
443-971 0 Taneytown MD 073H TELNYX LLC 238   2017-04-26   
667-201 7 Bel Air MD 073H TELNYX LLC 238   2017-03-14   
667-215 5 Elkton MD 073H TELNYX LLC 238   2017-03-14   
667-222 8 Armiger-Gibson Island MD 073H TELNYX LLC 238   2017-04-25   
667-240 0 Columbia MD 073H TELNYX LLC 238   2017-03-14   
667-307 2 Crofton MD 073H TELNYX LLC 238   2017-04-26   
667-314 4 Westminster MD 073H TELNYX LLC 238   2017-03-14   
667-321 8 Prince Frederick MD 073H TELNYX LLC 238   2017-03-14   
667-344 A Chase MD 073H TELNYX LLC 238      
667-344 0 Chase MD 073H TELNYX LLC 238   2017-04-26   
667-352 3 Aberdeen MD 073H TELNYX LLC 236   2017-03-14   
667-398 9 Port Deposit MD 073H TELNYX LLC 238   2022-12-26   
667-399 6 Union Bridge MD 073H TELNYX LLC 238   2022-09-09   
667-402 A Baltimore MD 073H TELNYX LLC 238      
667-402 1 Baltimore MD 073H TELNYX LLC 238   2017-01-23   
667-407 0 Baltimore MD 073H TELNYX LLC 238   2022-10-21   
667-421 A Columbia MD 073H TELNYX LLC 238      
667-421 8 Columbia MD 073H TELNYX LLC 238   2023-04-24   
667-458 4 Annapolis MD 073H TELNYX LLC 238   2017-03-14   
667-666 8 West River MD 073H TELNYX LLC 238   2017-04-26   
667-777 9 Severna Park MD 073H TELNYX LLC 238   2017-03-14   
667-802 6 Catonsville MD 073H TELNYX LLC 238   2017-03-14   
667-803 9 Solomons MD 073H TELNYX LLC 238   2017-04-26   
667-925 9 Bel Air MD 073H TELNYX LLC 238   2023-07-13   
667-967 7 Glen Burnie MD 073H TELNYX LLC 238   2017-03-14   

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Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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