=== HTTP code : 520 ===

Response headers
================
HTTP/1.1 520 &lt;none&gt;
Date: Wed, 20 May 2026 20:55:25 GMT
Content-Type: text/html; charset=UTF-8
Content-Length: 7326
Connection: close
Retry-After: 60
Cache-Control: private, max-age=0, no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Expires: Thu, 01 Jan 1970 00:00:01 GMT
Referrer-Policy: same-origin
X-Frame-Options: SAMEORIGIN
Server: cloudflare
CF-RAY: 9fee3dff7d999e1f-LAX

Request headers
================
GET / HTTP/1.1
Host: twitter.com
User-Agent: WPMU DEV Broken Link Checker Local Engine
Accept: */*
Accept-Encoding: deflate, gzip
Referer: https://seoleads.io
Connection: close
Range: bytes=0-2048

Response HTML
================
&lt;!DOCTYPE html&gt;
&lt;!--[if lt IE 7]&gt; &lt;html class=&quot;no-js ie6 oldie&quot; lang=&quot;en-US&quot;&gt; &lt;![endif]--&gt;
&lt;!--[if IE 7]&gt;    &lt;html class=&quot;no-js ie7 oldie&quot; lang=&quot;en-US&quot;&gt; &lt;![endif]--&gt;
&lt;!--[if IE 8]&gt;    &lt;html class=&quot;no-js ie8 oldie&quot; lang=&quot;en-US&quot;&gt; &lt;![endif]--&gt;
&lt;!--[if gt IE 8]&gt;&lt;!--&gt; &lt;html class=&quot;no-js&quot; lang=&quot;en-US&quot;&gt; &lt;!--&lt;![endif]--&gt;
&lt;head&gt;

&lt;title&gt;twitter.com | 520: Web server is returning an unknown error&lt;/title&gt;
&lt;meta charset=&quot;UTF-8&quot; /&gt;
&lt;meta http-equiv=&quot;Content-Type&quot; content=&quot;text/html; charset=UTF-8&quot; /&gt;
&lt;meta http-equiv=&quot;X-UA-Compatible&quot; content=&quot;IE=Edge&quot; /&gt;
&lt;meta name=&quot;robots&quot; content=&quot;noindex, nofollow&quot; /&gt;
&lt;meta name=&quot;viewport&quot; content=&quot;width=device-width,initial-scale=1&quot; /&gt;
&lt;link rel=&quot;stylesheet&quot; id=&quot;cf_styles-css&quot; href=&quot;/cdn-cgi/styles/main.css&quot; /&gt;
&lt;/head&gt;
&lt;body&gt;
&lt;div id=&quot;cf-wrapper&quot;&gt;
    &lt;div id=&quot;cf-error-details&quot; class=&quot;p-0&quot;&gt;
        &lt;header class=&quot;mx-auto pt-10 lg:pt-6 lg:px-8 w-240 lg:w-full mb-8&quot;&gt;
            &lt;h1 class=&quot;inline-block sm:block sm:mb-2 font-light text-60 lg:text-4xl text-black-dark leading-tight mr-2&quot;&gt;
                &lt;span class=&quot;inline-block&quot;&gt;Web server is returning an unknown error&lt;/span&gt;
                &lt;span class=&quot;code-label&quot;&gt;Error code 520&lt;/span&gt;
            &lt;/h1&gt;
            &lt;div&gt;
                Visit &lt;a href=&quot;https://www.cloudflare.com/5xx-error-landing?utm_source=errorcode_520&amp;utm_campaign=twitter.com&quot; target=&quot;_blank&quot; rel=&quot;noopener noreferrer&quot;&gt;cloudflare.com&lt;/a&gt; for more information.
            &lt;/div&gt;
            &lt;div class=&quot;mt-3&quot;&gt;2026-05-20 20:55:25 UTC&lt;/div&gt;
        &lt;/header&gt;
        &lt;div class=&quot;my-8 bg-gradient-gray&quot;&gt;
            &lt;div class=&quot;w-240 lg:w-full mx-auto&quot;&gt;
                &lt;div class=&quot;clearfix md:px-8&quot;&gt;
                    &lt;div id=&quot;cf-browser-status&quot; class=&quot; relative w-1/3 md:w-full py-15 md:p-0 md:py-8 md:text-left md:border-solid md:border-0 md:border-b md:border-gray-400 overflow-hidden float-left md:float-none text-center&quot;&gt;
  &lt;div class=&quot;relative mb-10 md:m-0&quot;&gt;
    
    &lt;span class=&quot;cf-icon-browser block md:hidden h-20 bg-center bg-no-repeat&quot;&gt;&lt;/span&gt;
    &lt;span class=&quot;cf-icon-ok
Link is broken.