=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 200 OK
Date: Sun, 14 Apr 2019 01:09:58 GMT
Server: Apache
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0
Pragma: no-cache
Set-Cookie: WHMCSlQNTMFAeqJGm=ofqti4inralo87o9h47ubnr8v0; path=/; secure; HttpOnly
Vary: User-Agent
Connection: close
Content-Type: text/html; charset=iso-8859-1

Request headers
================
HEAD /billing/cart.php?a=add&amp;pid=31 HTTP/1.1
Host: itxdesign.com
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Accept: */*
Referer: https://itxdesign.com
Connection: close


Link is valid.