=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 301 Moved Permanently
Server: CloudFront
Date: Sun, 28 Nov 2021 17:18:06 GMT
Content-Type: text/html
Content-Length: 183
Connection: close
Location: https://www.lifehacker.jp/2010/05/100514dropbox_folder_sync.html
X-Cache: Redirect from cloudfront
Via: 1.1 759f5a446e32d0b0f5d49f7d67134620.cloudfront.net (CloudFront)
X-Amz-Cf-Pop: NRT51-C1
X-Amz-Cf-Id: JAJIRvT2ZVl-WTCWZgCzyt3p0HJaQnOG0VzY3v-Fxx0s6bHrXXYOZw==

HTTP/1.1 200 OK
Content-Type: text/html; charset=UTF-8
Connection: close
Cache-Control: max-age=120
Date: Sun, 28 Nov 2021 17:18:06 GMT
Server: nginx
X-Content-Type-Options: nosniff
X-Frame-Options: SAMEORIGIN
X-XSS-Protection: 1; mode=block
Vary: Accept-Encoding
X-Cache: Miss from cloudfront
Via: 1.1 f2501cf5dcc313747872ec3f6db81731.cloudfront.net (CloudFront)
X-Amz-Cf-Pop: NRT51-C1
X-Amz-Cf-Id: DoRlJh2iIIdgOMqxn4WpfH7J77b-QunO0i9n4GhQQNNRIBAROR0Y2w==

Request headers
================
HEAD /2010/05/100514dropbox_folder_sync.html HTTP/1.1
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Host: www.lifehacker.jp
Accept: */*
Referer: http://web-marketing.zako.org
Connection: close


Link is valid.