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
202-350 A Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
202-378 A Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
202-420 A Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
202-551 A Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
202-572 A Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
202-756 A Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
202-772 A Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
202-777 A Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
202-791 A Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
202-850 A Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
202-909 A Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
240-233 A Tompkinsville MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
240-249 A Mechanicsville MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
240-254 A Hughesville MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
240-256 A Leonardtown MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
240-257 A Nanjemoy MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
240-258 A Ridge MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-354 A Washington Zone 10 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-458 A Washington Zone 4 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-539 A La Plata MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-541 A Washington Zone 5 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-542 A Waldorf MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-543 A Laurel MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-556 A Gaithersburg MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-623 A Washington Zone 13 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-628 A Washington Zone 3 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-634 A Washington Zone 2 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-658 A Ashton MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-666 A Washington Zone 14 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-679 A Washington Zone 12 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-683 A Washington Zone 4 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-684 A Indian Head MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-685 A Damascus MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-691 A Poolesville MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-692 A 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      
301-719 A Washington Zone 16 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-720 A Brandywine MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-747 A Washington Zone 6 MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-820 A Gaithersburg MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
301-821 A Laurel MD 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
571-507 A Washington Zone 17 VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
571-637 A Washington Zone 8 VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
571-638 A Herndon VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
703-234 A Herndon VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
703-236 A Washington Zone 8 VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
703-245 A Washington Zone 17 VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
703-251 A Washington Zone 19 VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
703-272 A Washington Zone 19 VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
703-337 A Engleside VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
703-423 A Dulles VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
703-439 A Herndon VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
703-570 A Dulles Metro VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
703-662 A Dulles VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
703-825 A Braddock VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
703-885 A Herndon VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
703-982 A Lorton VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
703-986 A Dale City VA 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      
771-203 A Washington Zone 1 DC 7529 TELEPORT COMMUNICATIONS AMERICA, LLC - DC 236      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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