=== HTTP code : 200 ===

Response headers
================
HTTP/1.1 200 OK
Content-Type: text/html
Content-Length: 6521
Connection: close
Server: Server
Date: Mon, 29 Jul 2019 00:09:21 GMT
Vary: Content-Type,Host,Cookie,Accept-Encoding,X-Amzn-CDN-Cache,X-Amzn-AX-Treatment,User-Agent
Edge-Control: no-store
x-amz-rid: Y19WEYGWANJAGHPPAXFC
X-Cache: Miss from cloudfront
Via: 1.1 0c9849c3038163feea7127f5ecafb2ea.cloudfront.net (CloudFront)
X-Amz-Cf-Pop: IAD89-C2
X-Amz-Cf-Id: 3TU8SLTb2oMUQQeDyMy8_WDYkeOj156hFPfocpHqs-c6YzfF7L78oA==

Request headers
================
HEAD /?_encoding=UTF8&amp;camp=1789&amp;creative=390957&amp;linkCode=ur2&amp;tag=studentsforse-20 HTTP/1.1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36
Host: www.amazon.com
Accept: */*
Referer: https://ssdp.org
Connection: close


Link is valid.