=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 200 OK
Date: Thu, 25 Nov 2021 13:18:19 GMT
Server: Apache
Cache-Control: max-age=3600
Expires: Thu, 25 Nov 2021 14:18:19 GMT
Vary: User-Agent,Accept-Encoding
Connection: close
Content-Type: text/html; charset=UTF-8

Request headers
================
HEAD /archives/2009/02/firefoxsimilarweb.html HTTP/1.1
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Host: www.oshiete-kun.net
Accept: */*
Referer: http://web-marketing.zako.org
Connection: close


Link is valid.