=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 301 Moved Permanently
Content-Type: application/binary
X-Content-Type-Options: nosniff
Cache-Control: no-cache, no-store, max-age=0, must-revalidate
Pragma: no-cache
Expires: Mon, 01 Jan 1990 00:00:00 GMT
Date: Fri, 03 Dec 2021 01:16:37 GMT
Location: https://jp.youtube.com/dev
Content-Length: 0
X-Frame-Options: SAMEORIGIN
Server: ESF
X-XSS-Protection: 0
Connection: close

HTTP/1.1 301 Moved Permanently
Content-Type: application/binary
X-Content-Type-Options: nosniff
Cache-Control: no-cache, no-store, max-age=0, must-revalidate
Pragma: no-cache
Expires: Mon, 01 Jan 1990 00:00:00 GMT
Date: Fri, 03 Dec 2021 01:16:37 GMT
Location: https://www.youtube.com/dev?gl=JP
Content-Length: 0
X-Frame-Options: SAMEORIGIN
Cross-Origin-Opener-Policy-Report-Only: same-origin; report-to=&quot;AXrpQddIIxATIXODgxB_JC3ZusCI&quot;
Report-To: {&quot;group&quot;:&quot;AXrpQddIIxATIXODgxB_JC3ZusCI&quot;,&quot;max_age&quot;:2592000,&quot;endpoints&quot;:[{&quot;url&quot;:&quot;https://csp.withgoogle.com/csp/report-to/encsid_AXrpQddIIxATIXODgxB_JC3ZusCI&quot;}]}
Permissions-Policy: ch-ua-arch=*, ch-ua-bitness=*, ch-ua-full-version=*, ch-ua-model=*, ch-ua-platform=*, ch-ua-platform-version=*
Server: ESF
X-XSS-Protection: 0
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/1.1 301 Moved Permanently
Content-Type: application/binary
X-Content-Type-Options: nosniff
Cache-Control: no-cache, no-store, max-age=0, must-revalidate
Pragma: no-cache
Expires: Mon, 01 Jan 1990 00:00:00 GMT
Date: Fri, 03 Dec 2021 01:16:37 GMT
Location: https://www.youtube.com/yt/dev?gl=JP
Content-Length: 0
X-Frame-Options: SAMEORIGIN
Strict-Transport-Security: max-age=31536000
Permissions-Policy: ch-ua-arch=*, ch-ua-bitness=*, ch-ua-full-version=*, ch-ua-model=*, ch-ua-platform=*, ch-ua-platform-version=*
Cross-Origin-Opener-Policy-Report-Only: same-origin; report-to=&quot;AXrpQdexiF0ssZ_nH8Dr-M3QgbdVRvO77RECMA&quot;
Report-To: {&quot;group&quot;:&quot;AXrpQdexiF0ssZ_nH8Dr-M3QgbdVRvO77RECMA&quot;,&quot;max_age&quot;:2592000,&quot;endpoints&quot;:[{&quot;url&quot;:&quot;https://csp.withgoogle.com/csp/report-to/encsid_AXrpQdexiF0ssZ_nH8Dr-M3QgbdVRvO77RECMA&quot;}]}
P3P: CP=&quot;This is not a P3P policy! See http://support.google.com/accounts/answer/151657?hl=ja for more info.&quot;
Server: ESF
X-XSS-Protection: 0
Set-Cookie: YSC=xOXrUCQBgVs; Domain=.youtube.com; Path=/; Secure; HttpOnly; SameSite=none
Set-Cookie: VISITOR_INFO1_LIVE=0HCRUDAiS9g; Domain=.youtube.com; Expires=Wed, 01-Jun-2022 01:16:37 GMT; Path=/; Secure; HttpOnly; SameSite=none
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/1.1 301 Moved Permanently
Location: https://developers.google.com/youtube
Content-Type: text/html; charset=UTF-8
X-Content-Type-Options: nosniff
Date: Fri, 03 Dec 2021 01:16:37 GMT
Expires: Fri, 03 Dec 2021 01:46:37 GMT
Cache-Control: public, max-age=1800
Server: sffe
Content-Length: 234
X-XSS-Protection: 0
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: Fri, 15 Apr 2016 16:40:43 GMT
Content-Type: text/html; charset=utf-8
Set-Cookie: _ga_devsite=GA1.3.3667719997.1638494198; Expires=Sun, 03-Dec-2023 01:16:38 GMT; Max-Age=63072000; Path=/
Content-Security-Policy: base-uri 'self'; object-src 'none'; script-src 'strict-dynamic' 'unsafe-inline' https: http: 'nonce-kjkpUoEqp2KX0jijO/V3Q9zBrXFD9/' '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: 20cc1b38b751bd77aee2c74c23c12679
Content-Length: 53143
Date: Fri, 03 Dec 2021 01:16:38 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 /youtube 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.