=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 301 Moved Permanently
Location: https://www.post.japanpost.jp/int/use/writing/normal.html
Content-Length: 0
Content-Type: text/html; charset=UTF-8

HTTP/1.1 200 OK
Date: Sat, 04 Dec 2021 08:16:06 GMT
Server: Apache
X-Frame-Options: SAMEORIGIN
X-Content-Type-Options: nosniff
Last-Modified: Thu, 21 Oct 2021 08:18:23 GMT
Accept-Ranges: bytes
Transfer-Encoding: chunked
Content-Type: text/html
Age: 0
Connection: close

Request headers
================
HEAD /int/use/writing/normal.html HTTP/1.1
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Host: www.post.japanpost.jp
Accept: */*
Referer: http://web-marketing.zako.org
Connection: close


Link is valid.