=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 200 OK
Server: GitHub.com
Date: Mon, 15 Apr 2019 16:10:46 GMT
Content-Type: text/html; charset=utf-8
Content-Length: 45499
Connection: close
Vary: Accept-Encoding
Last-Modified: Wed, 31 Jan 2018 12:32:24 GMT
Vary: Accept-Encoding
ETag: &quot;5a71b758-b1bb&quot;
Access-Control-Allow-Origin: *
Expires: Mon, 15 Apr 2019 16:20:46 GMT
Cache-Control: max-age=600
Accept-Ranges: bytes
X-GitHub-Request-Id: D4A0:57BE:6E60A3:922016:5CB4AD06

Request headers
================
HEAD / HTTP/1.1
Host: genericons.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.