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301 Moved Permanently - cpdns.com
HTTP Status: 301
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])
Date: Tue, 06 May 2025 06:18:39 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: keep-alive
Cache-Control: max-age=3600
Expires: Tue, 06 May 2025 07:18:39 GMT
Location: https://cpdns.com/
Report-To: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=enxIBacfd2Fa6GrMwUJsl9f86BF6RTCPNgyKkiwtw%2FBV%2Bp4TQ%2F0DimXV8fVt7uBZvQpmYhXettAGm7d1b9ev8LRRzAdgPXdj87AwIuCCXruDafDWi8Xb3ESplDbdD3iR%2BK%2FOAq%2BuaYY%3D"}],"group":"cf-nel","max_age":604800}
NEL: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
Vary: Accept-Encoding
cf-cache-status: DYNAMIC
Server: cloudflare
CF-RAY: 93b65c8e08832533-CPH
alt-svc: h3=":443"; ma=86400
server-timing: cfL4;desc="?proto=TCP&rtt=14858&min_rtt=14858&rtt_var=7429&sent=1&recv=3&lost=0&retrans=0&sent_bytes=0&recv_bytes=165&delivery_rate=0&cwnd=249&unsent_bytes=0&cid=0000000000000000&ts=0&x=0"

HTTP Code 301 Moved Permanently

301 status code means that the requested resource has been permanently moved to a new URL. All future requests should use the new address.

When is Code 301 used?

  • When changing a website domain
  • When modifying URL structures
  • When setting up redirects for SEO

What does Code 301 mean for the user?

The browser will automatically redirect the user to the new address, and search engines will update their indexes.

200 OK - https://cpdns.com/
HTTP Status: 200
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])
Date: Tue, 06 May 2025 06:18:39 GMT
Content-Type: text/html; charset=utf-8
Transfer-Encoding: chunked
Connection: keep-alive
Cf-Cache-Status: DYNAMIC
Server: cloudflare
Vary: Accept-Encoding
Access-Control-Allow-Origin: *
Cache-Control: public, max-age=0, must-revalidate
Referrer-Policy: strict-origin-when-cross-origin
X-Content-Type-Options: nosniff
Report-To: {"endpoints":[{"url":"https:\/\/a.nel.cloudflare.com\/report\/v4?s=AOsRFSjWIW0cJVyI%2Fv6fdo2bj5EhY7g8%2FmULERMnBBzXKiynNar0Ffgbm1RrENPo03MYiKbN0xjCfRFOkhoSQZGhk5U0ClfuRgg0S6v%2BY5l%2Bpq2udvWe1VXP6uXzQxSOC9%2Bc6%2F6Na4c%3D"}],"group":"cf-nel","max_age":604800}
Nel: {"success_fraction":0,"report_to":"cf-nel","max_age":604800}
CF-RAY: 93b65c8ebf50e4d4-RIX

HTTP Code 200 OK

200 status code is a standard successful HTTP server response. It means that the client’s request (e.g., from a browser) was successfully processed, and the server is delivering the requested data.

When is Code 200 used?

  • When loading a web page
  • When successfully receiving an API response
  • When processing a form or another HTTP request

What does Code 200 mean for the user?

The user receives content without errors, and the page or application functions properly. If Code 200 is accompanied by data, the browser or program processes and displays it to the user.

GET / HTTP/1.1
Host: cpdns.com
Accept: */*
User-Agent: Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; [email protected])

<!DOCTYPE html>
<html lang="zh-cn">

<head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
    <meta name="renderer" content="webkit">
    <title>CPDNS - Public DNS</title>
    <meta name="keywords" content="Public DNS,公共DNS,常用DNS" />
    <meta name="description" content="Public DNS,公共DNS,常用DNS" />

    <link href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
    <link href="/static/css/style.css" rel="stylesheet">
    <base target="_blank">

</head>

<body>
    <nav class="navbar navbar-fixed-top navbar-default">
        <div class="container">
            <div class="navbar-header">
                <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar"
                    aria-expanded="false" aria-controls="navbar">
                    <span class="sr-only">CPDNS</span>
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                    <span class="icon-bar"></span>
                </button>
                <a class="navbar-brand" href="/" target="_top">CPDNS</a>
            </div>
            <div id="navbar" class="collapse navbar-collapse">
                <ul class="nav navbar-nav navbar-right">

                </ul>
            </div>
        </div>
    </nav>
    <div class="container">
        <!-- class="jumbotron" 超大屏幕-->
        <!-- <div class="container"> -->
        <div class="jumbotron">
            <h3 class="text-center">Public DNS</h3>
            <p class="custom-text">
                When we go online, we need to translate domain names into IP addresses, and that's where DNS comes in.
                This DNS can be provided by your internet service provider or other organizations, such as the public
                DNS services listed in the table below, which help us with DNS resolution for our requests.
            </p>
        </div>
        <div class="container">

        </div>
        <div class="table-responsive">
            <table class="table table-striped table-hover table-bordered">
                <thead>
                    <tr>
                        <th>Service Provider</th>
                        <th>IPv4</th>
                        <th>IPv6</th>
                        <th>DoH</th>
                    </tr>
                </thead>
                <tbody>
                    
                    <tr>
                        <td><a href="https://1.1.1.1/dns/" target="_blank">Cloudflare Public DNS</a></td>
                        <td>
                            
                            <p>1.1.1.1</p>
                            
                            <p>1.0.0.1</p>
                            
                        </td>
                        <td>
                            
                            <p>2606:4700:4700::1111</p>
                            
                            <p>2606:4700:4700::1001</p>
                            
                        </td>
                        <td>
                            
                            <p>https://cloudflare-dns.com/dns-query</p>
                            
                        </td>
                    </tr>
                    
                    <tr>
                        <td><a href="https://developers.google.com/speed/public-dns/" target="_blank">Google Public DNS</a></td>
                        <td>
                            
                            <p>8.8.8.8</p>
                            
                            <p>8.8.4.4</p>
                            
                        </td>
                        <td>
                            
                            <p>2001:4860:4860::8888</p>
                            
                            <p>2001:4860:4860::8844</p>
                            
                        </td>
                        <td>
                            
                            <p>RFC 8484:<br />https://dns.google/dns-query</p>
                            
                            <p>JSON API:<br />https://dns.google/Resolve?</p>
                            
                        </td>
                    </tr>
                    
                    <tr>
                        <td><a href="https://www.dnspod.cn/products/publicdns" target="_blank">DNSPod Public DNS</a></td>
                        <td>
                            
                            <p>119.29.29.29</p>
                            
                        </td>
                        <td>
                            
                            <p>2402:4e00::</p>
                            
                        </td>
                        <td>
                            
                            <p>https://1.12.12.12/dns-query</p>
                            
                            <p>https://120.53.53.53/dns-query</p>
                            
                            <p>https://doh.pub/dns-query</p>
                            
                        </td>
                    </tr>
                    
                    <tr>
                        <td><a href="https://www.alidns.com/" target="_blank">AliDNS Public DNS</a></td>
                        <td>
                            
                            <p>223.5.5.5</p>
                            
                            <p>223.6.6.6</p>
                            
                        </td>
                        <td>
                            
                            <p>2400:3200::1</p>
                            
                            <p>2400:3200:baba::1</p>
                            
                        </td>
                        <td>
                            
                            <p>https://dns.alidns.com/dns-query</p>
                            
                        </td>
                    </tr>
                    
                    <tr>
                        <td><a href="https://dudns.baidu.com/index.html" target="_blank">Baidu Public DNS</a></td>
                        <td>
                            
                            <p>180.76.76.76</p>
                            
                        </td>
                        <td>
                            
                            <p>2400:da00::6666</p>
                            
                        </td>
                        <td>
                            
                            <p></p>
                            
                        </td>
                    </tr>
                    
                    <tr>
                        <td><a href="https://www.114dns.com/" target="_blank">114 Public DNS</a></td>
                        <td>
                            
                            <p>114.114.114.114</p>
                            
                            <p>114.114.115.115</p>
                            
                        </td>
                        <td>
                            
                            <p></p>
                            
                        </td>
                        <td>
                            
                            <p></p>
                            
                        </td>
                    </tr>
                    
                    <tr>
                        <td><a href="https://www.onedns.net/" target="_blank">OneDNS Public DNS</a></td>
                        <td>
                            
                            <p>117.50.10.10</p>
                            
                            <p>52.80.52.52</p>
                            
                        </td>
                        <td>
                            
                            <p>2400:7fc0:849e:200::8</p>
                            
                            <p>2404:c2c0:85d8:901::8</p>
                            
                        </td>
                        <td>
                            
                            <p></p>
                            
                        </td>
                    </tr>
                    
                    <tr>
                        <td><a href="https://www.quad9.net/" target="_blank">IBM Quad9</a></td>
                        <td>
                            
                            <p>9.9.9.9</p>
                            
                            <p>149.112.112.112</p>
                            
                        </td>
                        <td>
                            
                            <p>2620:fe::fe</p>
                            
                            <p>2620:fe::9</p>
                            
                        </td>
                        <td>
                            
                            <p></p>
                            
                        </td>
                    </tr>
                    
                    <tr>
                        <td><a href="https://www.opendns.com/" target="_blank">OpenDNS</a></td>
                        <td>
                            
                            <p>208.67.222.222</p>
                            
                            <p>208.67.220.220</p>
                            
                        </td>
                        <td>
                            
                            <p></p>
                            
                        </td>
                        <td>
                            
                            <p></p>
                            
                        </td>
                    </tr>
                    
                    <tr>
                        <td><a href="https://www.dnspai.com/public.html" target="_blank">DNSPAI Public DNS</a></td>
                        <td>
                            
                            <p>电信/移动：101.226.4.6</p>
                            
                            <p>联通：123.125.81.6</p>
                            
                        </td>
                        <td>
                            
                            <p></p>
                            
                        </td>
                        <td>
                            
                            <p></p>
                            
                        </td>
                    </tr>
                    
                    <tr>
                        <td><a href="https://dns.yandex.com/" target="_blank">Yandex Public DNS</a></td>
                        <td>
                            
                            <p>77.88.8.8</p>
                            
                            <p>77.88.8.1</p>
                            
                        </td>
                        <td>
                            
                            <p>2a02:6b8::feed:0ff</p>
                            
                            <p>2a02:6b8:0:1::feed:0ff</p>
                            
                        </td>
                        <td>
                            
                            <p></p>
                            
                        </td>
                    </tr>
                    

                </tbody>
            </table>
        </div>
        <footer>
            <p class="text-gray">
                You can use the above address as the primary DNS server or secondary DNS server.<br>
                Some devices require explicit values for all eight fields of IPv6 addresses and cannot accept the
                abbreviated :: IPv6 address syntax.<br>
                Expand the 0 entries to 0000 if four hexadecimal digits are required.
            </p>

            <p class="text-center">&copy; cpdns.com</p>
        </footer>
    </div>
</body>

</html>
<script>
    document.addEventListener("DOMContentLoaded", () => {
        const custom_text = document.querySelector('.custom-text');
        const text_gray = document.querySelector('.text-gray');
        const language = (navigator.language || navigator.browserLanguage).toLowerCase();
        if (language.indexOf('zh') != -1) {
            custom_text.innerText = "当我们上网时，需要将域名解析为IP地址，就需要用到DNS。这个DNS可能是你的网络运营商提供的，也可以是一些其它组织提供的，比如下表中的公共DNS服务，帮我们的请求提供DNS解析服务";
            text_gray.innerHTML = '提醒，公共DNS： 不是根服务器、不是权威dns、不是权威dns托管商<br>上表中各家的DNS解析速度因地区是有差别的，宣传的理念也有些不同，但都是为用户提供公共的递归查询服务的！选择适合自已的即可，可以选择两家的DNSIP，配置为设备的主DNS和到副DNS，提高DNS解析的稳定性。<br>某些设备要求 IPv6 地址的所有八个字段都必须具有显式值，并且它们不接受缩略的 :: IPv6 地址语法，上述 IPv6 的 DNS 地址的 :: 之间填允 0、或是多组 0（0之间使用:分隔）<br>如果需要四个十六进制数字，请将 0 条目扩展为 0000';
        }
    })
</script>

Whois info of domain

Domain Name: CPDNS.COM
Registry Domain ID: 1580024082_DOMAIN_COM-VRSN
Registrar WHOIS Server: whois.cloudflare.com
Registrar URL: http://www.cloudflare.com
Updated Date: 2023-08-19T15:12:01Z
Creation Date: 2009-12-27T04:07:48Z
Registry Expiry Date: 2026-12-27T04:07:48Z
Registrar: Cloudflare, Inc.
Registrar IANA ID: 1910
Registrar Abuse Contact Email: [email protected]
Registrar Abuse Contact Phone: +1.6503198930
Domain Status: clientTransferProhibited https://icann.org/epp#clientTransferProhibited
Name Server: ASA.NS.CLOUDFLARE.COM
Name Server: BRADLEY.NS.CLOUDFLARE.COM
DNSSEC: unsigned
URL of the ICANN Whois Inaccuracy Complaint Form: https://www.icann.org/wicf/
>>> Last update of whois database: 2025-05-06T06:18:26Z <<<
For more information on Whois status codes, please visit https://icann.org/epp
NOTICE: The expiration date displayed in this record is the date the
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