=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 301 Moved Permanently
Server: CloudFront
Date: Tue, 30 Nov 2021 15:19:16 GMT
Content-Type: text/html
Content-Length: 183
Connection: close
Location: https://b.hatena.ne.jp/kakei/20071008
X-Cache: Redirect from cloudfront
Via: 1.1 b6ba17f3b4a2b3c55c1072b95f3e0137.cloudfront.net (CloudFront)
X-Amz-Cf-Pop: NRT20-C1
X-Amz-Cf-Id: zJRqWD_tk53bbSsSwwAo5WxO4fZ6XhdPut4qBNZpYQnHsaMvfs1mhA==

HTTP/1.1 200 OK
Content-Type: text/html; charset=utf-8
Connection: close
Date: Tue, 30 Nov 2021 15:19:17 GMT
Server: nginx
Vary: Accept-Encoding
Set-Cookie: b=$1$teSUfuGL$Q4UPmTBFO06iS5l13HEjM/; expires=Mon, 25 Nov 2041 15:19:16 GMT; domain=hatena.ne.jp; path=/
Cache-Control: private
Vary: User-Agent
X-Dispatch: Boston::Web::Public::User#bookmarks_by_date
X-Frame-Options: deny
Strict-Transport-Security: max-age=31536000; includeSubDomains; preload
Access-Control-Allow-Origin: https://b.hatena.ne.jp
Vary: Origin
X-Cache: Miss from cloudfront
Via: 1.1 05e04c5e15a87c619e820e333918b7f2.cloudfront.net (CloudFront)
X-Amz-Cf-Pop: NRT57-P1
X-Amz-Cf-Id: s0JX92Sdy_GfNPulBWuVK19DUnpJX3qd1dUv-v_1nc2OJ_D5RraYYw==

Request headers
================
HEAD /kakei/20071008 HTTP/1.1
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Host: b.hatena.ne.jp
Accept: */*
Referer: http://web-marketing.zako.org
Connection: close


Link is valid.