=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 301 Moved Permanently
Location: https://www.nus.edu.sg/
Content-Length: 0
Connection: close

HTTP/1.1 200 OK
Cache-Control: no-cache
Pragma: no-cache
Content-Length: 51759
Content-Type: text/html; charset=utf-8
Expires: -1
X-Frame-Options: SAMEORIGIN
X-Content-Type-Options: nosniff
X-XSS-Protection: 1;mode=block
Strict-Transport-Security: max-age=16070400; includeSubDomains
Date: Sat, 04 Dec 2021 00:16:11 GMT
Connection: close
Set-Cookie: visid_incap_1988262=ZTbgRE24QTuHDWEF6R18EEqzqmEAAAAAQUIPAAAAAABjbhbZUqQiFWkWxLd3T/Kw; expires=Sat, 03 Dec 2022 10:04:26 GMT; HttpOnly; path=/; Domain=.nus.edu.sg; Secure; SameSite=None
Set-Cookie: nlbi_1988262=3ZsHcAKf5lhzt6FI2rIriwAAAAD05bhrfZXGoTfpZIB8cy2d; path=/; Domain=.nus.edu.sg; Secure; SameSite=None
Set-Cookie: incap_ses_426_1988262=v6/rLpIXw2gnjMSvK3XpBUuzqmEAAAAAAouLf+csFlErrNJgdR/+ow==; path=/; Domain=.nus.edu.sg; Secure; SameSite=None
X-CDN: Imperva
Upgrade-insecure-requests: 1
X-Iinfo: 5-242307163-242307172 NNNN CT(76 157 0) RT(1638576971387 48) q(0 0 2 0) r(3 3) U6

Request headers
================
HEAD / HTTP/1.1
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Host: www.nus.edu.sg
Accept: */*
Referer: http://web-marketing.zako.org
Connection: close


Link is valid.