IANA — Root Files

<!doctype html> <html> <head><script type="text/javascript" src="https://web-static.archive.org/_static/js/bundle-playback.js?v=7YQSqjSh" charset="utf-8"></script> <script type="text/javascript" src="https://web-static.archive.org/_static/js/wombat.js?v=txqj7nKC" charset="utf-8"></script> <script>window.RufflePlayer=window.RufflePlayer||{};window.RufflePlayer.config={"autoplay":"on","unmuteOverlay":"hidden"};</script> <script type="text/javascript" src="https://web-static.archive.org/_static/js/ruffle/ruffle.js"></script> <script type="text/javascript"> __wm.init("https://web.archive.org/web"); __wm.wombat("https://www.iana.org/domains/root/files","20190511004903","https://web.archive.org/","web","https://web-static.archive.org/_static/", "1557535743"); </script> <link rel="stylesheet" type="text/css" href="https://web-static.archive.org/_static/css/banner-styles.css?v=p7PEIJWi" /> <link rel="stylesheet" type="text/css" href="https://web-static.archive.org/_static/css/iconochive.css?v=3PDvdIFv" />  <title>IANA — Root Files</title> <meta charset="utf-8"/> <meta http-equiv="Content-type" content="text/html; charset=utf-8"/> <meta name="viewport" content="width=device-width, initial-scale=1"/> <link rel="stylesheet" media="screen" href="/web/20190511004903cs_/https://www.iana.org/_css/2015.1/screen.css"/> <link rel="stylesheet" media="print" href="/web/20190511004903cs_/https://www.iana.org/_css/2015.1/print.css"/> <link rel="shortcut icon" type="image/ico" href="/web/20190511004903im_/https://www.iana.org/_img/bookmark_icon.ico"/> <script type="text/javascript" src="/web/20190511004903js_/https://www.iana.org/_js/2013.1/jquery.js"></script> <script type="text/javascript" src="/web/20190511004903js_/https://www.iana.org/_js/2013.1/iana.js"></script> </head> <body> <header> <div id="header"> <div id="logo"> <a href="/web/20190511004903/https://www.iana.org/"><img src="/web/20190511004903im_/https://www.iana.org/_img/2013.1/iana-logo-header.svg" alt="Homepage"/></a> </div> <div class="navigation"> <ul> <li><a href="/web/20190511004903/https://www.iana.org/domains">Domains</a></li> <li><a href="/web/20190511004903/https://www.iana.org/numbers">Numbers</a></li> <li><a href="/web/20190511004903/https://www.iana.org/protocols">Protocols</a></li> <li><a href="/web/20190511004903/https://www.iana.org/about">About Us</a></li> </ul> </div> </div> </header> <div id="body"> <div id="main_right"> <h1>Root Files</h1> <h2>Root Hints</h2> <p>Operators who manage a DNS recursive resolver typically need to configure a <i>"root hints file"</i>. This file contains the names and IP addresses of the authoritative name servers for the root zone, so the software can bootstrap the DNS resolution process. For many pieces of software, this list comes built into the software.</p> <ul> <li><a href="https://web.archive.org/web/20190511004903/ftp://rs.internic.net/domain/named.root">Root Hints File</a> (FTP)</li> <li><a href="https://web.archive.org/web/20190511004903/http://www.internic.net/domain/named.root">Root Hints File</a> (HTTP)</li> </ul> <h2>Root Zone File</h2> <p>The complete root zone is available for download at the following locations. Ordinarily there should be no need to download this file on a regular basis, as the contents of the file are served via the DNS system itself.</p> <ul> <li><a href="https://web.archive.org/web/20190511004903/ftp://rs.internic.net/domain/root.zone">Root Zone File</a> (FTP)</li> <li><a href="https://web.archive.org/web/20190511004903/http://www.internic.net/domain/root.zone">Root Zone File</a> (HTTP)</li> </ul> <h2>Root Trust Anchor</h2> <p>The Root Trust Anchor, or <i>Key Signing Key</i>, is used by DNSSEC-enabled software to verify the contents of the DNS root zone is valid. It additionally enables a single chain of trust to DNSSEC-enabled top-level domains and beyond.</p> <ul> <li><a href="https://web.archive.org/web/20190511004903/https://data.iana.org/root-anchors/">Root Trust Anchors</a></li> </ul> <h2>Top-Level Domains</h2> <p>A plain-text list of top-level domains, the delegated children in the root zone, are provided for sofware applications that need to be aware of current top-level domains.</p> <ul> <li><a href="https://web.archive.org/web/20190511004903/https://data.iana.org/TLD/tlds-alpha-by-domain.txt">Top-Level Domain List</a></li> <ul> </div> <div id="sidebar_left"> <div class="navigation_box"> <h2>Domain Names</h2> <ul> <li id="nav_dom_top"><a href="/web/20190511004903/https://www.iana.org/domains">Overview</a></li> <li id="nav_dom_root"><a href="/web/20190511004903/https://www.iana.org/domains/root">Root Zone Management</a></li> <ul id="nav_dom_root_sub"> <li id="nav_dom_root_top"><a href="/web/20190511004903/https://www.iana.org/domains/root">Overview</a></li> <li id="nav_dom_root_db"><a href="/web/20190511004903/https://www.iana.org/domains/root/db">Root Database</a></li> <li id="nav_dom_root_files"><a href="/web/20190511004903/https://www.iana.org/domains/root/files">Hint and Zone Files</a></li> <li id="nav_dom_root_manage"><a href="/web/20190511004903/https://www.iana.org/domains/root/manage">Change Requests</a></li> <li id="nav_dom_root_procedures"><a href="/web/20190511004903/https://www.iana.org/domains/root/help">Instructions & Guides</a></li> <li id="nav_dom_root_servers"><a href="/web/20190511004903/https://www.iana.org/domains/root/servers">Root Servers</a></li> </ul> <li id="nav_dom_int"><a href="/web/20190511004903/https://www.iana.org/domains/int">.INT Registry</a></li> <ul id="nav_dom_int_sub"> <li id="nav_dom_int_top"><a href="/web/20190511004903/https://www.iana.org/domains/int">Overview</a></li> <li id="nav_dom_int_manage"><a href="/web/20190511004903/https://www.iana.org/domains/int/manage">Register/modify an .INT domain</a></li> <li id="nav_dom_int_policy"><a href="/web/20190511004903/https://www.iana.org/domains/int/policy">Eligibility</a></li> </ul> <li id="nav_dom_arpa"><a href="/web/20190511004903/https://www.iana.org/domains/arpa">.ARPA Registry</a></li> <li id="nav_dom_idn"><a href="/web/20190511004903/https://www.iana.org/domains/idn-tables">IDN Practices Repository</a></li> <ul id="nav_dom_idn_sub"> <li id="nav_dom_idn_top"><a href="/web/20190511004903/https://www.iana.org/domains/idn-tables">Overview</a></li>  <li id="nav_dom_idn_submit"><a href="/web/20190511004903/https://www.iana.org/procedures/idn-repository.html">Submit a table</a></li> </ul> <li id="nav_dom_dnssec"><a href="/web/20190511004903/https://www.iana.org/dnssec">Root Key Signing Key (DNSSEC)</a></li> <ul id="nav_dom_dnssec_sub"> <li id="nav_dom_dnssec_top"><a href="/web/20190511004903/https://www.iana.org/dnssec">Overview</a></li> <li id="nav_dom_dnssec_ksk"><a href="/web/20190511004903/https://www.iana.org/dnssec/files">Trusts Anchors and Keys</a></li> <li id="nav_dom_dnssec_ceremonies"><a href="/web/20190511004903/https://www.iana.org/dnssec/ceremonies">Root KSK Ceremonies</a></li> <li id="nav_dom_dnssec_dps"><a href="/web/20190511004903/https://www.iana.org/dnssec/dps">Practice Statement</a></li> <li id="nav_dom_dnssec_tcrs"><a href="/web/20190511004903/https://www.iana.org/dnssec/tcrs">Community Representatives</a></li> </ul> <li id="nav_dom_special"><a href="/web/20190511004903/https://www.iana.org/domains/reserved">Reserved Domains</a></li> </ul> </div> </div> </div> <footer> <div id="footer"> <table class="navigation"> <tr> <td class="section"><a href="/web/20190511004903/https://www.iana.org/domains">Domain Names</a></td> <td class="subsection"> <ul> <li><a href="/web/20190511004903/https://www.iana.org/domains/root">Root Zone Registry</a></li> <li><a href="/web/20190511004903/https://www.iana.org/domains/int">.INT Registry</a></li> <li><a href="/web/20190511004903/https://www.iana.org/domains/arpa">.ARPA Registry</a></li> <li><a href="/web/20190511004903/https://www.iana.org/domains/idn-tables">IDN Repository</a></li> </ul> </td> </tr> <tr> <td class="section"><a href="/web/20190511004903/https://www.iana.org/numbers">Number Resources</a></td> <td class="subsection"> <ul> <li><a href="/web/20190511004903/https://www.iana.org/abuse">Abuse Information</a></li> </ul> </td> </tr> <tr> <td class="section"><a href="/web/20190511004903/https://www.iana.org/protocols">Protocols</a></td> <td class="subsection"> <ul> <li><a href="/web/20190511004903/https://www.iana.org/protocols">Protocol Registries</a></li> <li><a href="/web/20190511004903/https://www.iana.org/time-zones">Time Zone Database</a></li> </ul> </td> </tr> <tr> <td class="section"><a href="/web/20190511004903/https://www.iana.org/about">About Us</a></td> <td class="subsection"> <ul> <li><a href="/web/20190511004903/https://www.iana.org/about/presentations">Presentations</a></li> <li><a href="/web/20190511004903/https://www.iana.org/reports">Reports</a></li> <li><a href="/web/20190511004903/https://www.iana.org/performance">Performance</a></li> <li><a href="/web/20190511004903/https://www.iana.org/reviews">Reviews</a></li> <li><a href="/web/20190511004903/https://www.iana.org/about/excellence">Excellence</a></li> <li><a href="/web/20190511004903/https://www.iana.org/contact">Contact Us</a></li> </ul> </td> </tr> </table> <div id="custodian"> <p>The IANA functions coordinate the Internet’s globally unique identifiers, and are provided by <a href="https://web.archive.org/web/20190511004903/http://pti.icann.org/">Public Technical Identifiers</a>, an affiliate of <a href="https://web.archive.org/web/20190511004903/http://www.icann.org/">ICANN</a>.</p> </div> <div id="legalnotice"> <ul> <li><a 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IANA — Root Files