=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 302 Found
Connection: close
x-powered-by: PHP/7.3.31
location: /?error=2
content-type: text/html; charset=UTF-8
date: Fri, 26 Nov 2021 13:20:06 GMT
server: LiteSpeed
cache-control: no-cache, no-store, must-revalidate, max-age=0
vary: User-Agent

HTTP/1.1 200 OK
Connection: close
x-powered-by: PHP/7.3.31
content-type: text/html; charset=UTF-8
date: Fri, 26 Nov 2021 13:20:07 GMT
server: LiteSpeed
vary: User-Agent

Request headers
================
HEAD /?error=2 HTTP/1.1
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Host: dropproxy.com
Accept: */*
Referer: http://web-marketing.zako.org
Connection: close


Link is valid.