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.

Switch: WASHDCDTDS1

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
202-239 4 Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2007-02-09   
202-403 8 Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2005-07-24   
202-414 2 Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2005-08-22   
202-568 7 Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2011-04-12   
202-644 A Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
202-644 4 Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2011-07-11   
202-644 5 Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2011-07-11   
202-649 A Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
202-649 1 Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2008-09-04   
202-649 2 Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2008-09-04   
202-649 3 Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2008-09-04   
202-649 4 Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2008-09-04   
202-649 5 Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2008-09-04   
202-649 6 Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2008-09-04   
202-649 7 Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2008-09-04   
202-649 8 Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2008-09-04   
202-649 9 Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2008-09-04   
202-813 A Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
202-813 4 Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2012-04-16   
240-237 A Lexington Park-Great Mills MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
240-237 4 Lexington Park-Great Mills MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
240-533 A Washington Zone 3 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
240-533 0 Washington Zone 3 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
240-533 9 Washington Zone 3 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
240-669 0 Washington Zone 11 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2009-10-12   
240-690 A Gaithersburg MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
240-690 3 Gaithersburg MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2017-01-09   
240-748 A Washington Zone 3 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
240-748 2 Washington Zone 3 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2021-02-22   
240-748 3 Washington Zone 3 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2021-02-22   
240-748 4 Washington Zone 3 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2021-02-22   
240-748 5 Washington Zone 3 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2021-02-22   
240-748 6 Washington Zone 3 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2021-02-22   
240-847 8 Washington Zone 3 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2016-06-13   
240-906 6 Washington Zone 4 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2017-02-13   
301-225 A Washington Zone 14 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-547 A Washington Zone 2 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-547 0 Washington Zone 2 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-547 2 Washington Zone 2 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-547 4 Washington Zone 2 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-677 A Washington Zone 14 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-823 A Washington Zone 13 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-823 2 Washington Zone 13 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2008-10-10   
301-828 A Washington Zone 2 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-832 A Washington Zone 4 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-832 9 Washington Zone 4 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-833 A Washington Zone 14 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-833 1 Washington Zone 14 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2008-07-17   
301-833 2 Washington Zone 14 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2008-07-17   
301-833 3 Washington Zone 14 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2008-07-17   

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Last updated: Tue, 29 Sep 2026 03:00:13 UTC

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