=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 301 Moved Permanently
Location: http://developers.google.com/checkout/?csw=1
Content-Type: text/html; charset=UTF-8
X-Content-Type-Options: nosniff
Date: Fri, 03 Dec 2021 03:18:28 GMT
Expires: Fri, 03 Dec 2021 03:48:28 GMT
Cache-Control: public, max-age=1800
Server: sffe
Content-Length: 241
X-XSS-Protection: 0
Connection: close

HTTP/1.1 301 Moved Permanently
Location: https://developers.google.com/checkout/?csw=1
X-Cloud-Trace-Context: fe91cc42241ad2e2ea781776d68e1b74
Date: Fri, 03 Dec 2021 03:18:28 GMT
Content-Type: text/html
Server: Google Frontend
Transfer-Encoding: chunked
Connection: close

HTTP/1.1 301 Moved Permanently
Content-Type: text/html; charset=utf-8
Location: https://developers.google.com/pay?csw=1
Cache-Control: no-cache, must-revalidate
Pragma: no-cache
Set-Cookie: _ga_devsite=GA1.3.626469946.1638501509; Expires=Sun, 03-Dec-2023 03:18:29 GMT; Max-Age=63072000; Path=/
Content-Security-Policy: base-uri 'self'; object-src 'none'; script-src 'strict-dynamic' 'unsafe-inline' https: http: 'nonce-E/qZpKogsiWZHUXln3w+H/Tf8EyNJk' '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
Expires: Fri, 01 Jan 1990 00:00:00 GMT
X-Cloud-Trace-Context: 2130acaa087ec5f3b2e2c1da6930c63a
Content-Length: 227
Date: Fri, 03 Dec 2021 03:18:29 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

HTTP/1.1 200 OK
Last-Modified: Tue, 01 Jun 2021 18:56:21 GMT
Content-Type: text/html; charset=utf-8
Set-Cookie: _ga_devsite=GA1.3.2644337815.1638501509; Expires=Sun, 03-Dec-2023 03:18:29 GMT; Max-Age=63072000; Path=/
Content-Security-Policy: base-uri 'self'; object-src 'none'; script-src 'strict-dynamic' 'unsafe-inline' https: http: 'nonce-xPl+DNDHVE88p0I14xpTnJoRrUtz0B' '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: 66dc2581212b3cd5b926cd96602cbaf1
Content-Length: 91620
Date: Fri, 03 Dec 2021 03:18:29 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 /pay?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.