=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 200 OK
Content-Length: 43
Content-Type: image/gif
Date: Wed, 01 Dec 2021 16:17:14 GMT
Server: Apache
Connection: Close

Request headers
================
HEAD /0.gif?a8mat=25TF9R+79DLDM+2QQG+62ENM HTTP/1.1
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Host: www19.a8.net
Accept: */*
Referer: http://web-marketing.zako.org
Connection: close


Link is valid.