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.

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
240-239 A Leonardtown MD 2593 CORE COMMUNICATIONS, INC.- MD 236   2024-01-15   
240-279 A Waldorf MD 2593 CORE COMMUNICATIONS, INC.- MD 236   2024-01-16   
240-325 A Damascus MD 2593 CORE COMMUNICATIONS, INC.- MD 236   2024-01-16   
240-327 A Gaithersburg MD 2593 CORE COMMUNICATIONS, INC.- MD 236   2024-01-16   
240-336 A Washington Zone 2 MD 2593 CORE COMMUNICATIONS, INC.- MD 236   2024-01-16   
240-548 A Washington Zone 14 MD 2593 CORE COMMUNICATIONS, INC.- MD 236   2024-01-16   
240-596 A Ashton MD 2593 CORE COMMUNICATIONS, INC.- MD 236   2024-01-16   
240-598 A Hughesville MD 2593 CORE COMMUNICATIONS, INC.- MD 236   2024-01-16   
240-610 A Washington Zone 4 MD 2593 CORE COMMUNICATIONS, INC.- MD 236   2024-01-16   
240-622 A La Plata MD 2593 CORE COMMUNICATIONS, INC.- MD 236   2024-01-16   
240-628 A Mechanicsville MD 2593 CORE COMMUNICATIONS, INC.- MD 236   2024-01-16   
240-634 A Ridge MD 2593 CORE COMMUNICATIONS, INC.- MD 236   2024-01-16   
240-635 A Tompkinsville MD 2593 CORE COMMUNICATIONS, INC.- MD 236   2024-01-16   
240-637 A Washington Zone 3 MD 2593 CORE COMMUNICATIONS, INC.- MD 236   2024-01-16   
240-639 A Laurel MD 2593 CORE COMMUNICATIONS, INC.- MD 236   2024-01-16   
240-800 A Washington Zone 2 MD 2593 CORE COMMUNICATIONS, INC.- MD 236   2024-01-16   
240-800 0 Washington Zone 2 MD 2593 CORE COMMUNICATIONS, INC.- MD 236   2012-08-17   
240-800 8 Washington Zone 2 MD 2593 CORE COMMUNICATIONS, INC.- MD 236   2012-08-17   
301-789 A Washington Zone 4 MD 2593 CORE COMMUNICATIONS, INC.- MD 236   2024-01-16   
571-360 A Independent Hill VA 5832 CORETEL VIRGINIA, LLC - VA 236      
571-380 A Lorton VA 5832 CORETEL VIRGINIA, LLC - VA 236      
571-390 A Nokesville VA 5832 CORETEL VIRGINIA, LLC - VA 236      
571-402 A Dale City VA 5832 CORETEL VIRGINIA, LLC - VA 236      
571-402 0 Dale City VA 5832 CORETEL VIRGINIA, LLC - VA 236   2009-05-21   
571-406 A Triangle VA 5832 CORETEL VIRGINIA, LLC - VA 236      
571-493 2 Dale City VA 5832 CORETEL VIRGINIA, LLC - VA 236   2019-05-28   
571-493 6 Dale City VA 5832 CORETEL VIRGINIA, LLC - VA 236   2019-05-28   
571-493 7 Dale City VA 5832 CORETEL VIRGINIA, LLC - VA 236   2019-05-28   

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

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