Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
301-683 2 Washington Zone 4 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-683 3 Washington Zone 4 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-683 6 Washington Zone 4 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-684 A Indian Head MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-684 9 Indian Head MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-685 A Damascus MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-685 9 Damascus MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-691 A Poolesville MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-691 9 Poolesville MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-692 A Washington Zone 11 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-692 0 Washington Zone 11 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-692 1 Washington Zone 11 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-692 2 Washington Zone 11 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-692 3 Washington Zone 11 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-692 4 Washington Zone 11 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-715 A Washington Zone 15 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-715 2 Washington Zone 15 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-719 A Washington Zone 16 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-719 1 Washington Zone 16 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-720 A Brandywine MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-720 9 Brandywine MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-747 A Washington Zone 6 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-747 9 Washington Zone 6 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-803 1 Washington Zone 2 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-803 2 Washington Zone 2 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-803 3 Washington Zone 2 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-803 6 Washington Zone 2 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-820 A Gaithersburg MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-820 4 Gaithersburg MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-820 6 Gaithersburg MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-821 A Laurel MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-821 4 Laurel MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
571-353 2 Herndon VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2012-10-24   
571-373 4 Washington Zone 19 VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2016-04-21   
571-373 5 Washington Zone 19 VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2016-04-21   
571-403 6 Washington Zone 8 VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2009-10-01   
571-403 7 Washington Zone 8 VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2009-10-01   
571-403 8 Washington Zone 8 VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2009-10-01   
571-458 2 Washington Zone 8 VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2013-04-05   
571-458 3 Washington Zone 8 VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2013-04-05   
571-458 4 Washington Zone 8 VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2013-04-05   
571-490 0 Washington Zone 19 VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2007-06-11   
571-507 A Washington Zone 17 VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
571-507 6 Washington Zone 17 VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2021-06-25   
571-551 7 Washington Zone 8 VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2014-05-30   
571-637 A Washington Zone 8 VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
571-637 6 Washington Zone 8 VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2023-06-29   
571-637 7 Washington Zone 8 VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2023-06-29   
571-638 A Herndon VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
571-638 6 Herndon VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236   2023-07-08   

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Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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