=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 301 Moved Permanently
Server: nginx
Date: Sat, 04 Dec 2021 04:17:20 GMT
Content-Type: text/html
Connection: close
Location: https://internet.watch.impress.co.jp/cda/news/2008/11/27/21663.html

HTTP/1.1 200 OK
Server: nginx
Date: Sat, 04 Dec 2021 04:17:20 GMT
Content-Type: text/html; charset=utf-8
Connection: close
Vary: Accept-Encoding,User-Agent

Request headers
================
HEAD /cda/news/2008/11/27/21663.html HTTP/1.1
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Host: internet.watch.impress.co.jp
Accept: */*
Referer: http://web-marketing.zako.org
Connection: close


Link is valid.