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.arpa Domain Delegation Data
<!doctype html> <html> <head> <title>.arpa Domain Delegation Data</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" href="/_css/2025.01/iana_website.css"/> <link rel="shortcut icon" type="image/ico" href="/_img/bookmark_icon.ico"/> <script type="text/javascript" src="/_js/jquery.js"></script> <script type="text/javascript" src="/_js/iana.js"></script> </head> <body> <header> <div id="header"> <div id="logo"> <a href="/"><img src="/_img/2025.01/iana-logo-header.svg" alt="Homepage"/></a> </div> <div class="navigation"> <ul> <li><a href="/domains">Domains</a></li> <li><a href="/protocols">Protocols</a></li> <li><a href="/numbers">Numbers</a></li> <!-- <li><a href="/news">News</a></li>--> <li><a href="/about">About</a></li> </ul> </div> </div> </header> <div id="body"> <article class="hemmed sidenav"> <main> <h1>Delegation Record for .ARPA</h1> <p>(Infrastructure top-level domain)</p> <h2>Sponsoring Organisation</h2> <b>Internet Architecture Board (IAB)</b><br/> c/o IETF Administration LLC<br>1000 N. West St.<br>Suite 1200<br>Wilmington DE 19801<br/> United States of America (the)<br/> <h2>Administrative Contact</h2> <b>Internet Architecture Board (IAB)</b><br/> Internet Architecture Board (IAB)<br/> c/o IETF Administration LLC<br>1000 N. West St.<br>Suite 1200<br>Wilmington DE 19801<br/> United States of America (the)<br/> <b>Email:</b> iab@iab.org<br/> <b>Voice:</b> +1 510 492 4080<br/> <b>Fax:</b> +1 510 492 4001<br/> <h2>Technical Contact</h2> <b>Internet Assigned Numbers Authority (IANA)</b><br/> Internet Corporation for Assigned Names and Numbers (ICANN)<br/> 12025 Waterfront Drive<br>Suite 300<br>Los Angeles CA 90094<br/> United States of America (the)<br/> <b>Email:</b> tld-contact@iana.org<br/> <b>Voice:</b> +1 310 301 5800<br/> <b>Fax:</b> +1 310 823-8649<br/> <h2>Name Servers</h2> <div class="iana-table-frame"> <table class="iana-table"> <thead><tr><th>Host Name</th><th>IP Address(es)</th></thead> <tbody> <tr> <td>a.ns.arpa</td> <td>198.41.0.4<br/>2001:503:ba3e:0:0:0:2:30<br/></td> </tr> <tr> <td>b.ns.arpa</td> <td>170.247.170.2<br/>2801:1b8:10:0:0:0:0:b<br/></td> </tr> <tr> <td>c.ns.arpa</td> <td>192.33.4.12<br/>2001:500:2:0:0:0:0:c<br/></td> </tr> <tr> <td>d.ns.arpa</td> <td>199.7.91.13<br/>2001:500:2d:0:0:0:0:d<br/></td> </tr> <tr> <td>e.ns.arpa</td> <td>192.203.230.10<br/>2001:500:a8:0:0:0:0:e<br/></td> </tr> <tr> <td>f.ns.arpa</td> <td>192.5.5.241<br/>2001:500:2f:0:0:0:0:f<br/></td> </tr> <tr> <td>g.ns.arpa</td> <td>192.112.36.4<br/>2001:500:12:0:0:0:0:d0d<br/></td> </tr> <tr> <td>h.ns.arpa</td> <td>198.97.190.53<br/>2001:500:1:0:0:0:0:53<br/></td> </tr> <tr> <td>i.ns.arpa</td> <td>192.36.148.17<br/>2001:7fe:0:0:0:0:0:53<br/></td> </tr> <tr> <td>k.ns.arpa</td> <td>193.0.14.129<br/>2001:7fd:0:0:0:0:0:1<br/></td> </tr> <tr> <td>l.ns.arpa</td> <td>199.7.83.42<br/>2001:500:9f:0:0:0:0:42<br/></td> </tr> <tr> <td>m.ns.arpa</td> <td>202.12.27.33<br/>2001:dc3:0:0:0:0:0:35<br/></td> </tr> </tbody> </table> </div> <h2>Registry Information</h2> <p> <b>URL for registration services:</b> <a href="https://www.iana.org/domains/arpa">https://www.iana.org/domains/arpa</a><br/> <b>WHOIS Server:</b> whois.iana.org <br> </p> <p><i> Record last updated 2023-11-27. Registration date 1985-01-01. </i></p> <script> $(document).ready(function() { $("#nav_dom_root").addClass("selected") $("#nav_dom_root_db").addClass("selected") }); </script> </main> <nav id="sidenav"> <div class="navigation_box"> <h2>Domain Names</h2> <ul> <li id="nav_dom_top"><a href="/domains">Overview</a></li> <li id="nav_dom_root"><a href="/domains/root">Root Zone Management</a></li> <ul id="nav_dom_root_sub"> <li id="nav_dom_root_top"><a href="/domains/root">Overview</a></li> <li id="nav_dom_root_db"><a href="/domains/root/db">Root Database</a></li> <li id="nav_dom_root_files"><a href="/domains/root/files">Hint and Zone Files</a></li> <li id="nav_dom_root_manage"><a href="/domains/root/manage">Change Requests</a></li> <li id="nav_dom_root_procedures"><a href="/domains/root/help">Instructions & Guides</a></li> <li id="nav_dom_root_servers"><a href="/domains/root/servers">Root Servers</a></li> </ul> <li id="nav_dom_int"><a href="/domains/int">.INT Registry</a></li> <ul id="nav_dom_int_sub"> <li id="nav_dom_int_top"><a href="/domains/int">Overview</a></li> <li id="nav_dom_int_manage"><a href="/domains/int/manage">Register/modify an .INT domain</a></li> <li id="nav_dom_int_policy"><a href="/domains/int/policy">Eligibility</a></li> </ul> <li id="nav_dom_arpa"><a href="/domains/arpa">.ARPA Registry</a></li> <li id="nav_dom_idn"><a href="/domains/idn-tables">IDN Practices Repository</a></li> <ul id="nav_dom_idn_sub"> <li id="nav_dom_idn_top"><a href="/domains/idn-tables">Overview</a></li> <!-- <li id="nav_dom_idn_tables"><a href="/domains/idn-tables/db">Tables</a></li> --> <li id="nav_dom_idn_submit"><a href="/help/idn-repository-procedure">Submit a table</a></li> </ul> <li id="nav_dom_dnssec"><a href="/dnssec">Root Key Signing Key (DNSSEC)</a></li> <ul id="nav_dom_dnssec_sub"> <li id="nav_dom_dnssec_top"><a href="/dnssec">Overview</a></li> <li id="nav_dom_dnssec_ksk"><a href="/dnssec/files">Trust Anchors and Rollovers</a></li> <li id="nav_dom_dnssec_ceremonies"><a href="/dnssec/ceremonies">Key Signing Ceremonies</a></li> <li id="nav_dom_dnssec_dps"><a href="/dnssec/procedures">Policies & Procedures</a></li> <li id="nav_dom_dnssec_tcrs"><a href="/dnssec/tcrs">Community Representatives</a></li> </ul> <li id="nav_dom_special"><a href="/domains/reserved">Reserved Domains</a></li> </ul> </div> </nav> </article> </div> <footer> <div id="footer"> <table class="navigation"> <tr> <td class="section"><a href="/domains">Domain Names</a></td> <td class="subsection"> <ul> <li><a href="/domains/root">Root Zone Registry</a></li> <li><a href="/domains/int">.INT Registry</a></li> <li><a href="/domains/arpa">.ARPA Registry</a></li> <li><a href="/domains/idn-tables">IDN Repository</a></li> </ul> </td> </tr> <tr> <td class="section"><a href="/numbers">Number Resources</a></td> <td class="subsection"> <ul> <li><a href="/abuse">Abuse Information</a></li> </ul> </td> </tr> <tr> <td class="section"><a href="/protocols">Protocols</a></td> <td class="subsection"> <ul> <li><a href="/protocols">Protocol Registries</a></li> <li><a href="/time-zones">Time Zone Database</a></li> </ul> </td> </tr> <tr> <td class="section"><a href="/about">About Us</a></td> <td class="subsection"> <ul> <li><a href="/news">News</a></li> <li><a href="/performance">Performance</a></li> <li><a href="/about/excellence">Excellence</a></li> <li><a href="/archive">Archive</a></li> <li><a href="/contact">Contact Us</a></li> </ul> </td> </tr> </table> <div id="custodian"> <p>The IANA functions coordinate the Internet鈥檚 globally unique identifiers, and are provided by <a href="http://pti.icann.org">Public Technical Identifiers</a>, an affiliate of <a href="http://www.icann.org/">ICANN</a>.</p> </div> <div id="legalnotice"> <ul> <li><a href="https://www.icann.org/privacy/policy">Privacy Policy</a></li> <li><a href="https://www.icann.org/privacy/tos">Terms of Service</a></li> </ul> </div> </div> </footer> <script> $(document).ready(function() { $("#nav_dom_int_sub").hide(); $("#nav_dom_idn_sub").hide(); $("#nav_dom_dnssec_sub").hide(); $("#nav_dom_tools_sub").hide(); $("#nav_dom_root").addClass("selected"); $("#nav_dom_root_db").addClass("selected"); }); </script> </body> </html>