=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 200 OK
Content-Type: text/html; charset=utf-8
Connection: close
Server: nginx
X-UA-Compatible: IE=edge,chrome=1
Date: Sun, 11 Feb 2018 14:45:51 GMT
Age: 0
Vary: Accept-Encoding
Cache-Control: max-age=180
Content-Security-Policy: upgrade-insecure-requests
X-Instart-Request-ID: 4117945255304216150:CNE01-NPPRY24:1518360351:613

Request headers
================
HEAD /science/archive/2017/09/irma-prep-without-english/539277/ HTTP/1.1
Host: www.theatlantic.com
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)
Accept: */*
Referer: http://51.15.134.16
Connection: close


Link is valid.