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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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
240-239 A Leonardtown MD 2593 CORE COMMUNICATIONS, INC. - MD 236      
240-279 A Waldorf MD 2593 CORE COMMUNICATIONS, INC. - MD 236      
240-325 A Damascus MD 2593 CORE COMMUNICATIONS, INC. - MD 236      
240-327 A Gaithersburg MD 2593 CORE COMMUNICATIONS, INC. - MD 236      
240-336 A Washington Zone 2 MD 2593 CORE COMMUNICATIONS, INC. - MD 236      
240-414 0 Washington Zone 6 MD 2593 CORE COMMUNICATIONS, INC. - MD 236   2019-06-26   
240-414 1 Washington Zone 6 MD 2593 CORE COMMUNICATIONS, INC. - MD 236   2019-06-26   
240-414 2 Washington Zone 6 MD 2593 CORE COMMUNICATIONS, INC. - MD 236   2019-06-26   
240-414 3 Washington Zone 6 MD 2593 CORE COMMUNICATIONS, INC. - MD 236   2019-06-26   
240-465 2 Washington Zone 2 MD 2593 CORE COMMUNICATIONS, INC. - MD 236   2019-06-26   
240-465 3 Washington Zone 2 MD 2593 CORE COMMUNICATIONS, INC. - MD 236   2019-06-26   
240-465 4 Washington Zone 2 MD 2593 CORE COMMUNICATIONS, INC. - MD 236   2019-06-26   
240-465 5 Washington Zone 2 MD 2593 CORE COMMUNICATIONS, INC. - MD 236   2019-06-26   
240-465 6 Washington Zone 2 MD 2593 CORE COMMUNICATIONS, INC. - MD 236   2019-06-26   
240-465 7 Washington Zone 2 MD 2593 CORE COMMUNICATIONS, INC. - MD 236   2019-06-26   
240-465 8 Washington Zone 2 MD 2593 CORE COMMUNICATIONS, INC. - MD 236   2019-06-26   
240-526 2 Leonardtown MD 2593 CORE COMMUNICATIONS, INC. - MD 236   2019-06-26   
240-526 4 Leonardtown MD 2593 CORE COMMUNICATIONS, INC. - MD 236   2019-06-26   
240-526 5 Leonardtown MD 2593 CORE COMMUNICATIONS, INC. - MD 236   2019-06-26   
240-526 6 Leonardtown MD 2593 CORE COMMUNICATIONS, INC. - MD 236   2019-06-26   
240-590 7 Washington Zone 12 MD 2593 CORE COMMUNICATIONS, INC. - MD 236   2019-07-30   
240-590 8 Washington Zone 12 MD 2593 CORE COMMUNICATIONS, INC. - MD 236   2019-07-30   
240-596 A Ashton MD 2593 CORE COMMUNICATIONS, INC. - MD 236      
240-597 3 Gaithersburg MD 2593 CORE COMMUNICATIONS, INC. - MD 236   2019-06-27   
240-597 4 Gaithersburg MD 2593 CORE COMMUNICATIONS, INC. - MD 236   2019-06-27   
240-597 5 Gaithersburg MD 2593 CORE COMMUNICATIONS, INC. - MD 236   2019-06-27   
240-598 A Hughesville MD 2593 CORE COMMUNICATIONS, INC. - MD 236      
240-610 A Washington Zone 4 MD 2593 CORE COMMUNICATIONS, INC. - MD 236      
240-622 A La Plata MD 2593 CORE COMMUNICATIONS, INC. - MD 236      
240-628 A Mechanicsville MD 2593 CORE COMMUNICATIONS, INC. - MD 236      
240-634 A Ridge MD 2593 CORE COMMUNICATIONS, INC. - MD 236      
240-635 A Tompkinsville MD 2593 CORE COMMUNICATIONS, INC. - MD 236      
240-637 A Washington Zone 3 MD 2593 CORE COMMUNICATIONS, INC. - MD 236      
240-639 A Laurel MD 2593 CORE COMMUNICATIONS, INC. - MD 236      
240-800 A Washington Zone 2 MD 2593 CORE COMMUNICATIONS, INC. - MD 236      
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   
301-348 6 Washington Zone 11 MD 2593 CORE COMMUNICATIONS, INC. - MD 236   2012-08-26   
301-348 7 Washington Zone 11 MD 2593 CORE COMMUNICATIONS, INC. - MD 236   2019-07-30   
301-414 1 Damascus MD 2593 CORE COMMUNICATIONS, INC. - MD 236   2019-07-17   
301-414 3 Damascus MD 2593 CORE COMMUNICATIONS, INC. - MD 236   2019-07-17   
301-414 4 Damascus MD 2593 CORE COMMUNICATIONS, INC. - MD 236   2019-07-17   
301-603 6 Washington Zone 11 MD 2593 CORE COMMUNICATIONS, INC. - MD 236   2019-07-30   
301-666 6 Washington Zone 14 MD 2593 CORE COMMUNICATIONS, INC. - MD 236   2012-08-26   
301-764 0 Waldorf MD 2593 CORE COMMUNICATIONS, INC. - MD 236   2019-07-30   
301-764 9 Waldorf MD 2593 CORE COMMUNICATIONS, INC. - MD 236   2019-07-30   
301-789 A Washington Zone 4 MD 3806 CORE COMMUNICATIONS, INC. - PA 236      
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      

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Last updated: Sun, 28 Feb 2021 19:06:05 UTC

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