=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 301 Moved Permanently
Location: http://developers.google.com/earth/?csw=1
Content-Type: text/html; charset=UTF-8
X-Content-Type-Options: nosniff
Date: Fri, 03 Dec 2021 03:16:38 GMT
Expires: Fri, 03 Dec 2021 03:46:38 GMT
Cache-Control: public, max-age=1800
Server: sffe
Content-Length: 238
X-XSS-Protection: 0
Connection: close

HTTP/1.1 301 Moved Permanently
Location: https://developers.google.com/earth/?csw=1
X-Cloud-Trace-Context: 91e588481740497f81989b4014eb16d6
Date: Fri, 03 Dec 2021 03:16:38 GMT
Content-Type: text/html
Server: Google Frontend
Transfer-Encoding: chunked
Connection: close

HTTP/1.1 200 OK
Last-Modified: Tue, 17 Jan 2017 23:59:22 GMT
Content-Type: text/html; charset=utf-8
Set-Cookie: _ga_devsite=GA1.3.3220735602.1638501398; Expires=Sun, 03-Dec-2023 03:16:38 GMT; Max-Age=63072000; Path=/
Content-Security-Policy: base-uri 'self'; object-src 'none'; script-src 'strict-dynamic' 'unsafe-inline' https: http: 'nonce-QmVLPWKwPn61SEDnxmfU3wfw5t6eOt' 'unsafe-eval'; report-uri https://csp.withgoogle.com/csp/devsite/v2
Strict-Transport-Security: max-age=63072000; includeSubdomains; preload
X-Frame-Options: SAMEORIGIN
X-XSS-Protection: 0
X-Content-Type-Options: nosniff
Cache-Control: no-cache, must-revalidate
Expires: 0
Pragma: no-cache
X-Cloud-Trace-Context: 7ff349f417a31f56b5c0008af71f5d90
Content-Length: 28821
Date: Fri, 03 Dec 2021 03:16:38 GMT
Server: Google Frontend
Alt-Svc: h3=&quot;:443&quot;; ma=2592000,h3-29=&quot;:443&quot;; ma=2592000,h3-Q050=&quot;:443&quot;; ma=2592000,h3-Q046=&quot;:443&quot;; ma=2592000,h3-Q043=&quot;:443&quot;; ma=2592000,quic=&quot;:443&quot;; ma=2592000; v=&quot;46,43&quot;
Connection: close

Request headers
================
HEAD /earth/?csw=1 HTTP/1.1
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Host: developers.google.com
Accept: */*
Referer: http://web-marketing.zako.org
Connection: close


Link is valid.