=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 301 Moved Permanently
Server: AkamaiGHost
Content-Length: 0
Location: https://mailchimp.com/
Date: Mon, 29 Jul 2019 01:09:56 GMT
Connection: close

HTTP/1.1 200 OK
Server: openresty
Content-Type: text/html; charset=UTF-8
X-UA-Compatible: IE=edge,chrome=1
X-Frame-Options: SAMEORIGIN
Cache-Control: max-age=600, private, must-revalidate
Date: Mon, 29 Jul 2019 01:09:56 GMT
Content-Length: 0
Connection: close
Set-Cookie: _AVESTA_ENVIRONMENT=prod; path=/
Set-Cookie: _mcid=1.b9caf3cb41596caf6e815a2ac51d3e78; expires=Tue, 28-Jul-2020 01:09:56 GMT; Max-Age=31536000; path=/; domain=.mailchimp.com

Request headers
================
HEAD / 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: mailchimp.com
Accept: */*
Referer: https://ssdp.org
Connection: close


Link is valid.