{"id":254809,"date":"2014-09-25T21:25:36","date_gmt":"2014-09-25T13:25:36","guid":{"rendered":"http:\/\/blog.zhenglei.net\/?p=254809"},"modified":"2014-09-25T21:36:27","modified_gmt":"2014-09-25T13:36:27","slug":"dns-server","status":"publish","type":"post","link":"https:\/\/blog.zhenglei.net\/?p=254809","title":{"rendered":"DNS Server"},"content":{"rendered":"<p>Root DNS server<\/p>\n<p><a href=\"http:\/\/www.iana.org\/domains\/root\/servers\">http:\/\/www.iana.org\/domains\/root\/servers<\/a><\/p>\n<p><a href=\"http:\/\/public-dns.tk\/\">http:\/\/public-dns.tk\/<\/a><\/p>\n<p><a href=\"http:\/\/pcsupport.about.com\/od\/tipstricks\/a\/free-public-dns-servers.htm\">http:\/\/pcsupport.about.com\/od\/tipstricks\/a\/free-public-dns-servers.htm<\/a><\/p>\n<p><a href=\"http:\/\/portforward.com\/networking\/dns.htm\">http:\/\/portforward.com\/networking\/dns.htm<\/a><\/p>\n<p>&nbsp;<\/p>\n<h1 class=\"h1style\">Listed DNS Server:<\/h1>\n<p><a href=\"http:\/\/portforward.com\/networking\/dns.htm\">http:\/\/portforward.com\/networking\/dns.htm<\/a><\/p>\n<p><b>Google DNS<\/b><br \/>\nPrimary: 8.8.8.8<br \/>\nSecondary: 8.8.4.4<\/p>\n<hr \/>\n<p><b>Australia<\/b><\/p>\n<p>QLD<br \/>\n144.140.70.29<br \/>\n144.140.71.15<br \/>\n144.140.70.16<\/p>\n<p>Westnet (ADSL)<br \/>\n203.21.20.20<br \/>\n203.10.1.9<\/p>\n<hr \/>\n<p><b>Canada<\/b><\/p>\n<p>Shaw Cable<br \/>\n64.59.144.16<br \/>\n64.59.144.17<\/p>\n<p>Telus(BC)<br \/>\n154.11.128.129<br \/>\n154.11.128.150<br \/>\n154.11.128.1<br \/>\n154.11.128.2<br \/>\n154.11.128.130<br \/>\n209.53.4.150<\/p>\n<hr \/>\n<p><b>China<\/b><\/p>\n<p>I-Cable<br \/>\n(Hong Kong)<br \/>\n210.80.60.1<br \/>\n210.80.60.2<\/p>\n<hr \/>\n<p><b>Italy<\/b><\/p>\n<p>Alice<br \/>\n212.216.112.112<br \/>\n212.216.172.62<\/p>\n<hr \/>\n<p><b>Malaysia<\/b><\/p>\n<p>Schoolnet (ADSL)<br \/>\n202.75.44.18<br \/>\n203.106.3.171<br \/>\n202.75.44.20<\/p>\n<p>Tmnet Streamyx (ADSL)<br \/>\n202.188.0.132<br \/>\n202.188.0.133<br \/>\n202.188.0.147<br \/>\n202.188.0.161<br \/>\n202.188.0.181<br \/>\n202.188.0.182<br \/>\n202.188.1.4<br \/>\n202.188.1.5<br \/>\n202.188.1.23<br \/>\n202.188.1.25<\/p>\n<hr \/>\n<p><b>Mexico<\/b><\/p>\n<p>Cablemas (Cable 128kbps)<br \/>\n69.44.143.245<br \/>\n200.79.192.3<\/p>\n<hr \/>\n<p><b>Nederland<\/b><br \/>\nHetnet<br \/>\n10.0.0.5<br \/>\n10.0.0.2<br \/>\n10.0.0.3<\/p>\n<p>Planet Internet<br \/>\n195.121.1.34<br \/>\n195.121.1.66<\/p>\n<hr \/>\n<p><b>New Zealand<\/b><\/p>\n<p>Xtra (DSL)<br \/>\n202.27.158.40<br \/>\n202.27.156.72<\/p>\n<p>Paradise (DSL)<br \/>\n203.96.152.4<br \/>\n203.96.152.12<\/p>\n<hr \/>\n<p><b>Portugal<\/b><\/p>\n<p>Netvis\u00e3o (Cable)<br \/>\n213.228.128.6<br \/>\n213.228.128.5<\/p>\n<p>TVTel<br \/>\n195.22.0.204<br \/>\n195.22.0.205<\/p>\n<hr \/>\n<p><b>Sweden<\/b><\/p>\n<p>Tele2<br \/>\n130.244.127.161<br \/>\n130.244.127.169<\/p>\n<hr \/>\n<p><b>United Kingdom<\/b><\/p>\n<p>AOL<br \/>\n205.188.146.145<\/p>\n<p>Blueyonder\/Telewest (Cable)<br \/>\n193.38.113.3<br \/>\n194.177.157.4<\/p>\n<p>BTInternet<br \/>\n194.73.73.172<br \/>\n194.73.73.173<br \/>\n194.72.9.44<br \/>\n194.72.9.38 (Cardiff, S.Wales)<br \/>\n194.72.9.39 (Cardiff, S.Wales)<\/p>\n<p>Bulldog Broadband<br \/>\nNs3.bulldogdsl.com . 83.146.21.5 (South)<br \/>\nNs4.bulldogdsl.com . 83.146.21.6 (South)<br \/>\nNs5.bulldogdsl.com . 212.158.248.5 (North)<br \/>\nNs6.bulldogdsl.com . 212.158.248.6 (North)<\/p>\n<p>Nildram (ADSL)<br \/>\n213.208.106.212<br \/>\n213.208.106.213<\/p>\n<p>NTL (Cable) and Virgin.net (ADSL)<br \/>\n194.168.4.100<br \/>\n194.168.8.100<\/p>\n<p>Pipex (ADSL)<br \/>\n62.241.162.35<br \/>\n62.189.34.83<\/p>\n<p>Silvermead (Satellite, DSL, ISDN)<br \/>\n62.55.96.226<br \/>\n62.55.96.109 (unchecked)<\/p>\n<p>Telewest (Cable)<br \/>\n62.31.176.39<br \/>\n194.117.134.19<\/p>\n<p>Tiscali, Screaming.net, Worldonline, Lineone<br \/>\n212.74.112.66<br \/>\n212.74.112.67<br \/>\n212.74.114.129 (Cambridge)<br \/>\n212.74.114.193 (Cambridge)<\/p>\n<p>Wanadoo UK (ADSL)<br \/>\n195.92.195.94<br \/>\n195.92.195.95<\/p>\n<p>Zen Internet<br \/>\nPrimary DNS: 212.23.8.1<br \/>\nSecondary DNS: 212.23.3.1<\/p>\n<hr \/>\n<p><b>United States of America<\/b><\/p>\n<p>Adelphia<br \/>\n67.21.13.4 Los Angeles, CA<br \/>\n67.21.13.2 Los Angeles, CA<br \/>\n24.48.217.226 Santa Monica, CA<br \/>\n24.48.217.227 Santa Monica, CA<br \/>\n68.168.1.42 Florida<br \/>\n68.168.1.46 Florida<\/p>\n<p>Bellsouth Fast access DSL:<br \/>\nGeorgia<br \/>\n205.152.37.23<br \/>\n205.152.37.24<br \/>\n205.152.37.25<br \/>\n205.152.144.24<br \/>\n205.152.144.25<\/p>\n<p>Charter Comms (Cable)<br \/>\n68.116.46.70<\/p>\n<p>Comcast (pick the nearest!)<br \/>\n68.87.66.196 Comcast (national) Primary DNS Server.<br \/>\n68.87.64.196 Comcast Secondary DNS Server.<br \/>\n68.57.32.5 (Virginia)<br \/>\n68.57.32.6 (Virginia)<br \/>\n216.148.227.68 (Denver, Colorado)<br \/>\n204.127.202.4 (Denver, Colorado)<br \/>\n68.42.244.5 (Taylor, Michigan)<br \/>\n68.42.244.6 (Taylor, Michigan)<br \/>\n68.62.160.5 (Huntsville, Alabama)<br \/>\n68.62.160.6 (Huntsville, Alabama)<br \/>\n68.87.96.3 (Pennsylvania)<br \/>\n68.87.96.4 (Pennsylvania)<\/p>\n<p>Cox HSI (Cable)<br \/>\n68.12.16.25 (Oklahoma &#8211; Primary)<br \/>\n68.12.16.30 (Oklahoma &#8211; Secondary)<br \/>\n68.2.16.30 (Oklahoma &#8211; Tertiary)<\/p>\n<p>Cox.net<br \/>\n68.10.16.25<br \/>\n68.10.16.30<br \/>\n68.9.16.30<\/p>\n<p>Earthlink &#8211; seem to be shared by Cable and DSL users in several states. Georgia and Florida confirmed.<br \/>\n207.69.188.187<br \/>\n207.69.188.186<br \/>\n207.69.188.185<br \/>\n209.86.63.217 (Cable) &#8211; Charlotte, NC<\/p>\n<p>Harrisonville Telephone Company (HTC)<br \/>\n216.114.114.130 (Illinois)<br \/>\n216.114.114.132 (Illinois)<\/p>\n<p>Horry Telephone Coop<br \/>\n66.153.128.98 (Horry County, South Carolina)<br \/>\n66.153.162.98 (Horry County, South Carolina)<\/p>\n<p>ORSC Public Access DNS Nameservers (Anyone can use these, no matter what ISP)<br \/>\n199.166.24.253<br \/>\n199.166.27.253<br \/>\n199.166.28.10<br \/>\n199.166.29.3<br \/>\n199.166.31.3<br \/>\n195.117.6.25<br \/>\n204.57.55.100<\/p>\n<p>Roadrunner (Cable)<br \/>\n24.25.195.1 (San Diego, CA)<br \/>\n24.25.195.2 (San Diego, CA)<br \/>\n24.25.195.3 (San Diego, CA)<\/p>\n<p>SBC Yahoo DSL<br \/>\n206.13.31.13<br \/>\n206.13.28.60<br \/>\n206.13.31.5<br \/>\n206.13.28.31<\/p>\n<p>Speakeasy (pick any two!)<br \/>\n66.93.87.2 (Washington state and Oregon)<br \/>\n216.231.41.2 (Washington DC &#8211; probably)<br \/>\n216.254.95.2 (NY, Massachusetts and Pennsylvania)<br \/>\n64.81.45.2 (Los Angeles, California)<br \/>\n64.81.111.2 (Denver, Colorado)<br \/>\n64.81.127.2 (Dallas, Texas)<br \/>\n64.81.79.2 (Sacramento, California)<br \/>\n64.81.159.2 (Baltimore and Washington DC)<br \/>\n66.92.64.2 (Boston, Massachusetts)<br \/>\n66.92.224.2 (Philadelphia)<br \/>\n66.92.159.2 (Washington DC)<br \/>\n216.27.175.2 (Atlanta, Georgia. Serves Florida too)<\/p>\n<p>Sprintlink (nationwide)<br \/>\n204.117.214.10<br \/>\n199.2.252.10<br \/>\n204.97.212.10<\/p>\n<p>TimeWarner<br \/>\n24.93.1.119 (Rochester, NY)<\/p>\n<p>Unicom<br \/>\n216.104.64.5 (Grants Pass, OR)<br \/>\n216.104.72.5 (Portland, OR)<\/p>\n<p>FrontierNet \/ Citlink \/ New North DNS addresses:<br \/>\n66.133.170.2 (Rochester, NY)<br \/>\n170.215.255.114 (Rochester, NY)<br \/>\n216.67.192.3 (Arizona)<br \/>\n207.173.225.3 (Arizona)<br \/>\n207.173.225.3 (California)<br \/>\n216.67.192.3 (California)<br \/>\n170.215.255.114 (New York (areas other than Rochester))<br \/>\n66.133.170.2 (New York (areas other than Rochester))<br \/>\n170.215.184.3 (West Virginia)<br \/>\n170.215.126.3 (West Virginia)<br \/>\n170.215.126.3 (Tennessee, Georgia)<br \/>\n170.215.184.3 (Tennessee, Georgia)<br \/>\n67.50.135.146 (Illinois)<br \/>\n66.133.191.35 (Illinois)<br \/>\n66.133.191.35 (Wisconsin, Minnesota, Iowa, North Dakota and Nebraska)<br \/>\n170.215.255.114 (Wisconsin, Minnesota, Iowa, North Dakota and Nebraska)<\/p>\n<p>Suddenlink DNS Numbers<br \/>\n209.55.0.110<br \/>\n209.55.1.220<br \/>\nVerizon (Level3) &#8211; these are not restricted to Verizon customers<br \/>\n4.2.2.1<br \/>\n4.2.2.2<br \/>\n4.2.2.3<br \/>\n4.2.2.4<br \/>\n4.2.2.5<br \/>\n4.2.2.6<\/p>\n<p>Wave Broadband<br \/>\n24.113.32.29<br \/>\n24.113.32.30<\/p>\n<p>&nbsp;<\/p>\n<p><a href=\"http:\/\/theos.in\/windows-xp\/free-fast-public-dns-server-list\/\">http:\/\/theos.in\/windows-xp\/free-fast-public-dns-server-list\/<\/a><\/p>\n<h2>Free Public DNS Server<\/h2>\n<p>=&gt; Service provider: <strong><a href=\"http:\/\/code.google.com\/speed\/public-dns\/\" target=\"_blank\">Google<\/a><\/strong><br \/>\nGoogle public dns server IP address:<\/p>\n<ul>\n<li>8.8.8.8<\/li>\n<li>8.8.4.4<\/li>\n<\/ul>\n<p>=&gt; Service provider:<strong><a href=\"http:\/\/www.opendns.com\/\" target=\"_blank\">OpenDNS<\/a><\/strong><br \/>\nOpenDNS free dns server list \/ IP address:<\/p>\n<ul>\n<li>208.67.222.222<\/li>\n<li>208.67.220.220<\/li>\n<\/ul>\n<p>=&gt; Service provider:<strong><a href=\"http:\/\/www.opennicproject.org\/\" target=\"_blank\">Opennicproject<\/a><\/strong> (visit <a href=\"http:\/\/www.opennicproject.org\/\" target=\"_blank\">this url<\/a> to get nearest DNS server for your country)<\/p>\n<ul>\n<li>151.236.6.156<\/li>\n<li>118.88.20.195<\/li>\n<\/ul>\n<p>=&gt; Service provider:<strong><a href=\"http:\/\/dyn.com\/support\/internet-guide-setup\/\" target=\"_blank\">DynDNS<\/a><\/strong><\/p>\n<ul>\n<li>216.146.35.35<\/li>\n<li>216.146.36.36<\/li>\n<\/ul>\n<p>=&gt; Service provider:<strong><a href=\"http:\/\/www.dnsadvantage.com\" target=\"_blank\">Dnsadvantage<\/a><\/strong><br \/>\nDnsadvantage free dns server list:<\/p>\n<ul>\n<li>156.154.70.1<\/li>\n<li>156.154.71.1<\/li>\n<\/ul>\n<p>=&gt; Service provider:<strong><a href=\"https:\/\/www.safedns.com\/\" target=\"_blank\">SafeDNS<\/a><\/strong><\/p>\n<ul>\n<li>195.46.39.39<\/li>\n<li>195.46.39.40<\/li>\n<\/ul>\n<p>=&gt; Service provider:<strong><a href=\"http:\/\/www.comodo.com\/secure-dns\/\" target=\"_blank\">Comodo Secure DNS<\/a><\/strong><\/p>\n<ul>\n<li>8.26.56.26<\/li>\n<li>8.20.247.20<\/li>\n<\/ul>\n<p>=&gt; Service provider:<strong><a href=\"http:\/\/nortondns.com\/\" target=\"_blank\">Norton<\/a><\/strong><br \/>\nNorton free dns server list \/ IP address:<\/p>\n<ul>\n<li>198.153.192.1<\/li>\n<li>198.153.194.1<\/li>\n<\/ul>\n<p>=&gt; Service provider: <strong>GTEI DNS (now Verizon)<\/strong><br \/>\nPublic Name server IP address:<\/p>\n<ul>\n<li>4.2.2.1<\/li>\n<li>4.2.2.2<\/li>\n<li>4.2.2.3<\/li>\n<li>4.2.2.4<\/li>\n<li>4.2.2.5<\/li>\n<li>4.2.2.6<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<p><a href=\"http:\/\/pcsupport.about.com\/od\/tipstricks\/a\/free-public-dns-servers.htm\">http:\/\/pcsupport.about.com\/od\/tipstricks\/a\/free-public-dns-servers.htm<\/a><\/p>\n<table border=\"1\" cellspacing=\"0\" cellpadding=\"2\">\n<thead>\n<tr>\n<th width=\"40%\">Provider<\/th>\n<th width=\"30%\">Primary DNS Server<\/th>\n<th>Secondary DNS Server<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><a href=\"http:\/\/www.level3.com\">Level3<\/a><sup>1<\/sup><\/td>\n<td>209.244.0.3<\/td>\n<td>209.244.0.4<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/developers.google.com\/speed\/public-dns\/\">Google<\/a><sup>2<\/sup><\/td>\n<td>8.8.8.8<\/td>\n<td>8.8.4.4<\/td>\n<\/tr>\n<tr>\n<td><a href=\"http:\/\/www.comodo.com\/secure-dns\/\">Comodo Secure DNS<\/a><\/td>\n<td>8.26.56.26<\/td>\n<td>8.20.247.20<\/td>\n<\/tr>\n<tr>\n<td><a href=\"http:\/\/www.opendns.com\">OpenDNS Home<\/a><sup>3<\/sup><\/td>\n<td>208.67.222.222<\/td>\n<td>208.67.220.220<\/td>\n<\/tr>\n<tr>\n<td><a href=\"http:\/\/www.neustar.biz\/services\/dns-services\/free-recursive-dns\">DNS Advantage<\/a><\/td>\n<td>156.154.70.1<\/td>\n<td>156.154.71.1<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/dns.norton.com\/faq.html\">Norton ConnectSafe<\/a><sup>4<\/sup><\/td>\n<td>199.85.126.10<\/td>\n<td>199.85.127.10<\/td>\n<\/tr>\n<tr>\n<td><a href=\"http:\/\/www.greentm.co.uk\/\">GreenTeamDNS<\/a><sup>5<\/sup><\/td>\n<td>81.218.119.11<\/td>\n<td>209.88.198.133<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/www.safedns.com\/features\">SafeDNS<\/a><sup>6<\/sup><\/td>\n<td>195.46.39.39<\/td>\n<td>195.46.39.40<\/td>\n<\/tr>\n<tr>\n<td><a href=\"http:\/\/www.opennicproject.org\">OpenNIC<\/a><sup>7<\/sup><\/td>\n<td>216.87.84.211<\/td>\n<td>23.90.4.6<\/td>\n<\/tr>\n<tr>\n<td><a href=\"http:\/\/public-root.com\/root-server-check\/index.htm\">Public-Root<\/a><sup>8<\/sup><\/td>\n<td>199.5.157.131<\/td>\n<td>208.71.35.137<\/td>\n<\/tr>\n<tr>\n<td><a href=\"http:\/\/www.markosweb.com\/free-dns\/\">SmartViper<\/a><\/td>\n<td>208.76.50.50<\/td>\n<td>208.76.51.51<\/td>\n<\/tr>\n<tr>\n<td><a href=\"http:\/\/dyn.com\/support\/internet-guide-setup\/\">Dyn<\/a><\/td>\n<td>216.146.35.35<\/td>\n<td>216.146.36.36<\/td>\n<\/tr>\n<tr>\n<td><a href=\"http:\/\/freedns.zone\">FreeDNS<\/a><sup>9<\/sup><\/td>\n<td>37.235.1.174<\/td>\n<td>37.235.1.177<\/td>\n<\/tr>\n<tr>\n<td><a href=\"http:\/\/blog.censurfridns.dk\/en\/ip\">censurfridns.dk<\/a><sup>10<\/sup><\/td>\n<td>89.233.43.71<\/td>\n<td>89.104.194.142<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/dns.watch\/index\">DNS.WATCH<\/a><sup>11<\/sup><\/td>\n<td>84.200.69.80<\/td>\n<td>84.200.70.40<\/td>\n<\/tr>\n<tr>\n<td><a href=\"http:\/\/he.net\/\">Hurricane Electric<\/a><sup>12<\/sup><\/td>\n<td>74.82.42.42<\/td>\n<td><\/td>\n<\/tr>\n<tr>\n<td><a href=\"http:\/\/www.servidordenoms.cat\/\">puntCAT<\/a><sup>13<\/sup><\/td>\n<td>109.69.8.51<\/td>\n<td><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p><sub>[1] The free DNS servers listed above as <em>Level3<\/em> will automatically route to the nearest DNS server operated by Level3 Communications, the company that provides most of the ISPs in the US their access to the Internet backbone.<\/sub><\/p>\n<div id=\"adsense2\" class=\"adsense ads-half\"><\/div>\n<p><sub>[2] Google also offers IPv6 public DNS servers: 2001:4860:4860::8888 and 2001:4860:4860::8844.<\/sub><\/p>\n<p><sub>[3] OpenDNS also offers DNS servers that block adult content, called <a href=\"http:\/\/www.opendns.com\/home-internet-security\/parental-controls\/opendns-familyshield\/\">OpenDNS FamilyShield<\/a>. Those DNS servers are 208.67.222.123 and 208.67.220.123. A premium DNS offering is also available, called <a href=\"http:\/\/www.opendns.com\/home-internet-security\/parental-controls\/opendns-home-vip\/\">OpenDNS Home VIP<\/a>.<\/sub><\/p>\n<p><sub>[4] The Norton ConnectSafe free DNS servers listed above block sites hosting malware, phishing schemes, and scams, and is called <em>Policy 1<\/em>. Use <em>Policy 2<\/em> (199.85.126.20 and 199.85.127.20) to block those sites plus those with pornographic content. Use <em>Policy 3<\/em> (199.85.126.30 and 199.85.127.30) to block all previously mentioned site categories plus those Norton deems &#8220;non-family friendly.&#8221; Be sure to check out <a href=\"https:\/\/dns.norton.com\/faq.html\">the list of things blocked in Policy 3<\/a> &#8211; there are several controversial topics in there that you may find perfectly acceptable.<\/sub><\/p>\n<p><sub>[5] GreenTeamDNS &#8220;blocks 18 categories which include malware, botnets, dangerous websites, adult related content, aggressive\/violent sites as well as advertisements and drug-related websites&#8221; according to <a href=\"http:\/\/www.greentm.co.uk\/faq.html\">their FAQ page<\/a>. Premium accounts have more control.<\/sub><\/p>\n<p><sub>[6] Register <a href=\"https:\/\/www.safedns.com\/auth\/register\">here<\/a> with SafeDNS for content filtering options in several areas.<\/sub><\/p>\n<p><sub>[7] The DNS servers listed here for OpenNIC are just two of many in the US and across the globe. Instead of using the OpenNIC DNS servers listed above, see their complete list of public DNS servers <a href=\"http:\/\/wiki.opennicproject.org\/Tier2\">here<\/a> and use two that are close to you or, better yet, let them tell you that automatically <a href=\"http:\/\/www.opennicproject.org\/\">here<\/a>. OpenNIC also offers some IPv6 public DNS servers.<\/sub><\/p>\n<p><sub>[8] These Public-Root DNS servers are the only two currently operating in the United States but if you&#8217;re located ouside the US, see their complete list <a href=\"http:\/\/public-root.com\/root-server-check\/index.htm\">here<\/a> and choose the best servers based on your location.<\/sub><\/p>\n<p><sub>[9] FreeDNS says that they &#8220;never log DNS queries.&#8221; Their free DNS servers are located in Austria.<\/sub><\/p>\n<p><sub>[10] The censurfridns.dk DNS servers are uncensored, operated by a privately funded individual, and are physically located in Denmark. You can read more about them <a href=\"http:\/\/blog.censurfridns.dk\/en\/faq\">here<\/a>. IPv6 DNS servers are also available at 2002:d596:2a92:1:71:53:: and 2002:5968:c28e::53.<\/sub><\/p>\n<p><sub>[11] DNS.WATCH also has IPv6 DNS servers at 2001:1608:10:25::1c04:b12f and 2001:1608:10:25::9249:d69b. In an uncommon but much appreciated move, DNS.WATCH publishes <a href=\"https:\/\/dns.watch\/statistics\">live statistics<\/a> for both of their free DNS servers. Both servers are located in Germany.<\/sub><\/p>\n<p><sub>[12] Hurricane Electric also has an IPv6 public DNS server available: 2001:470:20::2.<\/sub><\/p>\n<p><sub>[13] puntCAT is physically located near Barcelona, Spain. The IPv6 version of their free DNS server is 2a00:1508:0:4::9.<\/sub><\/p>\n<p><strong>Note:<\/strong> Primary DNS servers are sometimes called <em>preferred<\/em> DNS servers and secondary DNS servers are sometimes called <em>alternate<\/em> DNS servers. Primary and secondary DNS servers can be &#8220;mixed and matched&#8221; to provide another layer of redundancy.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Root DNS server http:\/\/www.iana.org\/doma &hellip; <a href=\"https:\/\/blog.zhenglei.net\/?p=254809\">\u7ee7\u7eed\u9605\u8bfb <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-254809","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=\/wp\/v2\/posts\/254809","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=254809"}],"version-history":[{"count":6,"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=\/wp\/v2\/posts\/254809\/revisions"}],"predecessor-version":[{"id":254815,"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=\/wp\/v2\/posts\/254809\/revisions\/254815"}],"wp:attachment":[{"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=254809"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=254809"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.zhenglei.net\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=254809"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}