=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 301 Moved Permanently
Server: nginx
Date: Mon, 29 Jul 2019 01:39:10 GMT
Content-Type: text/html
Content-Length: 162
Connection: close
Location: https://www.flexyourrights.org/

HTTP/1.1 200 OK
Server: nginx
Date: Mon, 29 Jul 2019 01:39:10 GMT
Content-Type: text/html; charset=UTF-8
Connection: close
Vary: Accept-Encoding
X-Pingback: /wp/xmlrpc.php
Link: &lt;https://www.flexyourrights.org/wp-json/&gt;; rel=&quot;https://api.w.org/&quot;
Link: &lt;https://www.flexyourrights.org/&gt;; rel=shortlink
Fastcgi-Cache: STALE
Strict-Transport-Security: max-age=31536000; includeSubDomains; 
X-Content-Type-Options: nosniff
X-XSS-Protection: 1; mode=block
X-UA-Compatible: IE=Edge
Content-Security-Policy: frame-ancestors 'self'
X-Frame-Options: SAMEORIGIN

Request headers
================
HEAD / HTTP/1.1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36
Host: www.flexyourrights.org
Accept: */*
Referer: https://ssdp.org
Connection: close


Link is valid.