=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 200 OK
Date: Thu, 15 Feb 2018 19:06:27 GMT
Server: Apache/2.4.25 (Debian)
Last-Modified: Mon, 18 Dec 2017 11:49:02 GMT
ETag: &quot;56b0-5609befcbaaef&quot;
Accept-Ranges: bytes
Content-Length: 22192
Connection: close
Content-Type: image/png

Request headers
================
HEAD /wp-content/uploads/2011/11/Barclays-fr-thumbnail.png HTTP/1.1
Host: 51.15.134.16
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Accept: */*
Referer: http://51.15.134.16
Connection: close


Link is valid.