=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 301 Moved Permanently
Date: Tue, 30 Nov 2021 01:15:28 GMT
Content-Type: text/html
Content-Length: 178
Connection: close
Server: nginx
Location: https://www.itmedia.co.jp/news/articles/0706/15/news054.html
Strict-Transport-Security: max-age=31536000

HTTP/1.1 200 OK
Date: Tue, 30 Nov 2021 01:15:28 GMT
Content-Type: text/html
Connection: close
Server: nginx
Vary: Accept-Encoding
Expires: Tue, 30 Nov 2021 01:30:28 GMT
Cache-Control: max-age=900
Strict-Transport-Security: max-age=31536000

Request headers
================
HEAD /news/articles/0706/15/news054.html HTTP/1.1
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Host: www.itmedia.co.jp
Accept: */*
Referer: http://web-marketing.zako.org
Connection: close


Link is valid.