=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 301 Moved Permanently
Server: nginx
Date: Tue, 25 Sep 2018 17:54:56 GMT
Content-Type: text/html; charset=UTF-8
Connection: close
X-Powered-By: PHP/5.6.31-1~dotdeb+7.1
Expires: Tue, 25 Sep 2018 18:54:56 GMT
Cache-Control: max-age=3600
Location: http://www.nongmoproject.org/gmo-facts/
X-Redirect-Agent: redirection
Strict-Transport-Security: max-age=31557600; includeSubDomains

HTTP/1.1 200 OK
Server: nginx
Date: Tue, 25 Sep 2018 17:54:57 GMT
Content-Type: text/html; charset=UTF-8
Connection: close
X-Powered-By: W3 Total Cache/0.9.7
Link: &lt;https://www.nongmoproject.org/wp-json/&gt;; rel=&quot;https://api.w.org/&quot;
Link: &lt;https://www.nongmoproject.org/?p=14&gt;; rel=shortlink
Strict-Transport-Security: max-age=31557600; includeSubDomains

Request headers
================
HEAD /gmo-facts/ HTTP/1.1
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Host: www.nongmoproject.org
Accept: */*
Referer: http://sothisisfitness.com
Connection: close


Link is valid.