=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 200 OK
Date: Mon, 29 Jul 2019 00:08:31 GMT
Content-Type: text/html; charset=UTF-8
Connection: close
Server: nginx/1.14.1
X-ga-web: webtemp lighttpd
X-ga-web: webtemp apache
Last-Modified: Sun, 28 Jul 2019 23:44:06 GMT
Cache-Control: max-age=3600
Expires: Mon, 29 Jul 2019 01:08:31 GMT
Vary: Accept-Encoding
X-Varnish: 20031639
Age: 0
Via: 1.1 varnish (Varnish/6.2)
ETag: W/&quot;5d6ff-58ec659dedd80-gzip&quot;
X-Debug: 
Accept-Ranges: bytes

Request headers
================
HEAD /coupon-codes/gap.com HTTP/1.1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36
Host: givingassistant.org
Accept: */*
Referer: https://ssdp.org
Connection: close


Link is valid.