=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 200 OK
Cache-Control: private
Content-Length: 101
Content-Type: text/html; charset=utf-8
Server: Microsoft-IIS/7.5
X-AspNet-Version: 4.0.30319
X-Powered-By: ASP.NET
Date: Sun, 23 Sep 2018 05:50:34 GMT

Request headers
================
HEAD /impression.track?CID=102175&amp;AFID=419140&amp;ADID=1213654&amp;SID= HTTP/1.1
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Host: www.audibletrack.com
Accept: */*
Referer: http://sothisisfitness.com
Connection: close


Link is valid.